90721419263 has 16 divisors (see below), whose sum is σ = 93681477120. Its totient is φ = 87799723200.

The previous prime is 90721419233. The next prime is 90721419277. The reversal of 90721419263 is 36291412709.

It is a cyclic number.

It is not a de Polignac number, because 90721419263 - 2¹² = 90721415167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90721419233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2638778 + ... + 2672936.

It is an arithmetic number, because the mean of its divisors is an integer number (5855092320).

Almost surely, 2^90721419263 is an apocalyptic number.

90721419263 is a deficient number, since it is larger than the sum of its proper divisors (2960057857).

90721419263 is a wasteful number, since it uses less digits than its factorization.

90721419263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34718.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 90721419263 in words is "ninety billion, seven hundred twenty-one million, four hundred nineteen thousand, two hundred sixty-three".