90291468897 has 24 divisors (see below), whose sum is σ = 155533133184. Its totient is φ = 49351857984.

The previous prime is 90291468889. The next prime is 90291468931. The reversal of 90291468897 is 79886419209.

90291468897 is a `hidden beast` number, since 9 + 0 + 2 + 91 + 468 + 89 + 7 = 666.

It is not a de Polignac number, because 90291468897 - 2³ = 90291468889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (90291468997) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 31155028 + ... + 31157925.

It is an arithmetic number, because the mean of its divisors is an integer number (6480547216).

Almost surely, 2^90291468897 is an apocalyptic number.

It is an amenable number.

90291468897 is a deficient number, since it is larger than the sum of its proper divisors (65241664287).

90291468897 is a wasteful number, since it uses less digits than its factorization.

90291468897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62312989 (or 62312986 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 90291468897 in words is "ninety billion, two hundred ninety-one million, four hundred sixty-eight thousand, eight hundred ninety-seven".