90868624578 has 16 divisors (see below), whose sum is σ = 201930276960. Its totient is φ = 30289541508.

The previous prime is 90868624547. The next prime is 90868624589. The reversal of 90868624578 is 87542686809.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841376100 + ... + 841376207.

It is an arithmetic number, because the mean of its divisors is an integer number (12620642310).

Almost surely, 2^90868624578 is an apocalyptic number.

90868624578 is an abundant number, since it is smaller than the sum of its proper divisors (111061652382).

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

90868624578 is a wasteful number, since it uses less digits than its factorization.

90868624578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682752318 (or 1682752312 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 90868624578 in words is "ninety billion, eight hundred sixty-eight million, six hundred twenty-four thousand, five hundred seventy-eight".