20200142455987 has 32 divisors (see below), whose sum is σ = 22548464612352. Its totient is φ = 17977764236544.

The previous prime is 20200142455937. The next prime is 20200142455991. The reversal of 20200142455987 is 78955424100202.

It is a cyclic number.

It is not a de Polignac number, because 20200142455987 - 2⁷ = 20200142455859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20200142455987.

It is not an unprimeable number, because it can be changed into a prime (20200142455937) 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, 36612868 + ... + 37160494.

It is an arithmetic number, because the mean of its divisors is an integer number (704639519136).

Almost surely, 2^{20200142455987} is an apocalyptic number.

20200142455987 is a deficient number, since it is larger than the sum of its proper divisors (2348322156365).

20200142455987 is a wasteful number, since it uses less digits than its factorization.

20200142455987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548587.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 20200142455987 in words is "twenty trillion, two hundred billion, one hundred forty-two million, four hundred fifty-five thousand, nine hundred eighty-seven".