90851964221475 has 36 divisors (see below), whose sum is σ = 162739119268336. Its totient is φ = 48450463295040.

The previous prime is 90851964221443. The next prime is 90851964221563. The reversal of 90851964221475 is 57412246915809.

90851964221475 is a `hidden beast` number, since 9 + 0 + 8 + 5 + 196 + 422 + 14 + 7 + 5 = 666.

It is not a de Polignac number, because 90851964221475 - 2⁵ = 90851964221443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13533319 + ... + 19101168.

Almost surely, 2^{90851964221475} is an apocalyptic number.

90851964221475 is a deficient number, since it is larger than the sum of its proper divisors (71887155046861).

90851964221475 is a wasteful number, since it uses less digits than its factorization.

90851964221475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32646876 (or 32646868 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 63.

The spelling of 90851964221475 in words is "ninety trillion, eight hundred fifty-one billion, nine hundred sixty-four million, two hundred twenty-one thousand, four hundred seventy-five".