902945140656 has 80 divisors (see below), whose sum is σ = 2514331509984. Its totient is φ = 277575800832.

The previous prime is 902945140627. The next prime is 902945140667. The reversal of 902945140656 is 656041549209.

It is a super-2 number, since 2×902945140656² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 902945140599 and 902945140608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24990 + ... + 1344066.

Almost surely, 2^902945140656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 902945140656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1257165754992).

902945140656 is an abundant number, since it is smaller than the sum of its proper divisors (1611386369328).

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

902945140656 is a wasteful number, since it uses less digits than its factorization.

902945140656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320198 (or 1320192 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 902945140656 in words is "nine hundred two billion, nine hundred forty-five million, one hundred forty thousand, six hundred fifty-six".