1087890725944 has 64 divisors (see below), whose sum is σ = 2312225556480. Its totient is φ = 475374960000.

The previous prime is 1087890725897. The next prime is 1087890725981. The reversal of 1087890725944 is 4495270987801.

It is a super-2 number, since 2×1087890725944² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 908559 + ... + 1732414.

It is an arithmetic number, because the mean of its divisors is an integer number (36128524320).

Almost surely, 2^{1087890725944} is an apocalyptic number.

It is an amenable number.

1087890725944 is an abundant number, since it is smaller than the sum of its proper divisors (1224334830536).

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

1087890725944 is a wasteful number, since it uses less digits than its factorization.

1087890725944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641172 (or 2641168 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 64.

The spelling of 1087890725944 in words is "one trillion, eighty-seven billion, eight hundred ninety million, seven hundred twenty-five thousand, nine hundred forty-four".