86390241361921 has 16 divisors (see below), whose sum is σ = 101757446714880. Its totient is φ = 71808379951680.

The previous prime is 86390241361903. The next prime is 86390241361961. The reversal of 86390241361921 is 12916314209368.

It is a cyclic number.

It is not a de Polignac number, because 86390241361921 - 2⁹ = 86390241361409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86390241361901) 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, 1204479370 + ... + 1204551091.

It is an arithmetic number, because the mean of its divisors is an integer number (6359840419680).

Almost surely, 2^{86390241361921} is an apocalyptic number.

It is an amenable number.

86390241361921 is a deficient number, since it is larger than the sum of its proper divisors (15367205352959).

86390241361921 is a wasteful number, since it uses less digits than its factorization.

86390241361921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409030624.

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 86390241361921 in words is "eighty-six trillion, three hundred ninety billion, two hundred forty-one million, three hundred sixty-one thousand, nine hundred twenty-one".