90615787043776 has 28 divisors (see below), whose sum is σ = 179869013161432. Its totient is φ = 45294460892928.

The previous prime is 90615787043773. The next prime is 90615787043813. The reversal of 90615787043776 is 67734078751609.

It is a happy number.

It is a super-2 number, since 2×90615787043776² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90615787043773) 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, 209667270 + ... + 210099013.

It is an arithmetic number, because the mean of its divisors is an integer number (6423893327194).

Almost surely, 2^{90615787043776} is an apocalyptic number.

It is an amenable number.

90615787043776 is a deficient number, since it is larger than the sum of its proper divisors (89253226117656).

90615787043776 is a wasteful number, since it uses less digits than its factorization.

90615787043776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419769668 (or 419769658 counting only the distinct ones).

The product of its (nonzero) digits is 373403520, while the sum is 70.

The spelling of 90615787043776 in words is "ninety trillion, six hundred fifteen billion, seven hundred eighty-seven million, forty-three thousand, seven hundred seventy-six".