90886723321 has 4 divisors (see below), whose sum is σ = 90888169600. Its totient is φ = 90885277044.

The previous prime is 90886723237. The next prime is 90886723327. The reversal of 90886723321 is 12332768809.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12332768809 = 111053².

It is a cyclic number.

It is not a de Polignac number, because 90886723321 - 2¹⁵ = 90886690553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90886723327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624381 + ... + 756058.

It is an arithmetic number, because the mean of its divisors is an integer number (22722042400).

Almost surely, 2^90886723321 is an apocalyptic number.

It is an amenable number.

90886723321 is a deficient number, since it is larger than the sum of its proper divisors (1446279).

90886723321 is a wasteful number, since it uses less digits than its factorization.

90886723321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446278.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 90886723321 in words is "ninety billion, eight hundred eighty-six million, seven hundred twenty-three thousand, three hundred twenty-one".