20494672590 has 64 divisors (see below), whose sum is σ = 57733277184. Its totient is φ = 4557886848.

The previous prime is 20494672589. The next prime is 20494672591. The reversal of 20494672590 is 9527649402.

It is an interprime number because it is at equal distance from previous prime (20494672589) and next prime (20494672591).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20494672591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1311064 + ... + 1326603.

It is an arithmetic number, because the mean of its divisors is an integer number (902082456).

Almost surely, 2^20494672590 is an apocalyptic number.

20494672590 is an abundant number, since it is smaller than the sum of its proper divisors (37238604594).

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

20494672590 is a wasteful number, since it uses less digits than its factorization.

20494672590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637721.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The spelling of 20494672590 in words is "twenty billion, four hundred ninety-four million, six hundred seventy-two thousand, five hundred ninety".