90007197756 has 48 divisors (see below), whose sum is σ = 240035228160. Its totient is φ = 25714624320.

The previous prime is 90007197713. The next prime is 90007197757. The reversal of 90007197756 is 65779170009.

It is a junction number, because it is equal to n+sod(n) for n = 90007197699 and 90007197708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90007197757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1765666 + ... + 1815926.

It is an arithmetic number, because the mean of its divisors is an integer number (5000733920).

Almost surely, 2^90007197756 is an apocalyptic number.

It is an amenable number.

90007197756 is an abundant number, since it is smaller than the sum of its proper divisors (150028030404).

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

90007197756 is a wasteful number, since it uses less digits than its factorization.

90007197756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71594 (or 71592 counting only the distinct ones).

The product of its (nonzero) digits is 833490, while the sum is 51.

The spelling of 90007197756 in words is "ninety billion, seven million, one hundred ninety-seven thousand, seven hundred fifty-six".