900923744640 has 64 divisors (see below), whose sum is σ = 2871694442160. Its totient is φ = 240246331392.

The previous prime is 900923744561. The next prime is 900923744657. The reversal of 900923744640 is 46447329009.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 900923744640.

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, 234613639 + ... + 234617478.

Almost surely, 2^900923744640 is an apocalyptic number.

It is an amenable number.

900923744640 is an abundant number, since it is smaller than the sum of its proper divisors (1970770697520).

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

900923744640 is a wasteful number, since it uses less digits than its factorization.

900923744640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469231139 (or 469231127 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 900923744640 in words is "nine hundred billion, nine hundred twenty-three million, seven hundred forty-four thousand, six hundred forty".