20620415425240 has 32 divisors (see below), whose sum is σ = 46397476818000. Its totient is φ = 8247892017024.

The previous prime is 20620415425223. The next prime is 20620415425261. The reversal of 20620415425240 is 4252451402602.

It is a self number, because there is not a number n which added to its sum of digits gives 20620415425240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7346655 + ... + 9757774.

Almost surely, 2^{20620415425240} is an apocalyptic number.

20620415425240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20620415425240 is an abundant number, since it is smaller than the sum of its proper divisors (25777061392760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20620415425240 is a wasteful number, since it uses less digits than its factorization.

20620415425240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17134579 (or 17134575 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 20620415425240 its reverse (4252451402602), we get a palindrome (24872866827842).

The spelling of 20620415425240 in words is "twenty trillion, six hundred twenty billion, four hundred fifteen million, four hundred twenty-five thousand, two hundred forty".