90118698052 has 12 divisors (see below), whose sum is σ = 157735482940. Its totient is φ = 45051417216.

The previous prime is 90118697983. The next prime is 90118698053. The reversal of 90118698052 is 25089681109.

It can be written as a sum of positive squares in 2 ways, for example, as 88402750276 + 1715947776 = 297326^2 + 41424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 90118697987 and 90118698005.

It is not an unprimeable number, because it can be changed into a prime (90118698053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1957353 + ... + 2002864.

Almost surely, 2^90118698052 is an apocalyptic number.

It is an amenable number.

90118698052 is a deficient number, since it is larger than the sum of its proper divisors (67616784888).

90118698052 is a wasteful number, since it uses less digits than its factorization.

90118698052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965910 (or 3965908 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 49.

The spelling of 90118698052 in words is "ninety billion, one hundred eighteen million, six hundred ninety-eight thousand, fifty-two".