90724569666915 has 16 divisors (see below), whose sum is σ = 145160613728928. Its totient is φ = 48386003068416.

The previous prime is 90724569666893. The next prime is 90724569666989. The reversal of 90724569666915 is 51966696542709.

It is not a de Polignac number, because 90724569666915 - 2¹⁸ = 90724569404771 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25399152 + ... + 28750061.

It is an arithmetic number, because the mean of its divisors is an integer number (9072538358058).

Almost surely, 2^{90724569666915} is an apocalyptic number.

90724569666915 is a deficient number, since it is larger than the sum of its proper divisors (54436044062013).

90724569666915 is a wasteful number, since it uses less digits than its factorization.

90724569666915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54260918.

The product of its (nonzero) digits is 1322697600, while the sum is 75.

The spelling of 90724569666915 in words is "ninety trillion, seven hundred twenty-four billion, five hundred sixty-nine million, six hundred sixty-six thousand, nine hundred fifteen".