90571007642 has 8 divisors (see below), whose sum is σ = 136009678176. Its totient is φ = 45234448252.

The previous prime is 90571007633. The next prime is 90571007651. The reversal of 90571007642 is 24670017509.

It is an interprime number because it is at equal distance from previous prime (90571007633) and next prime (90571007651).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 90571007642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25525568 + ... + 25529115.

It is an arithmetic number, because the mean of its divisors is an integer number (17001209772).

Almost surely, 2^90571007642 is an apocalyptic number.

90571007642 is a deficient number, since it is larger than the sum of its proper divisors (45438670534).

90571007642 is a wasteful number, since it uses less digits than its factorization.

90571007642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51055572.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 90571007642 in words is "ninety billion, five hundred seventy-one million, seven thousand, six hundred forty-two".