86138350731 has 12 divisors (see below), whose sum is σ = 124424639352. Its totient is φ = 57424377696.

The previous prime is 86138350717. The next prime is 86138350741. The reversal of 86138350731 is 13705383168.

86138350731 is a `hidden beast` number, since 8 + 6 + 138 + 3 + 507 + 3 + 1 = 666.

It is not a de Polignac number, because 86138350731 - 2⁵ = 86138350699 is a prime.

It is a super-2 number, since 2×86138350731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86138350741) 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 11 ways as a sum of consecutive naturals, for example, 691060 + ... + 806126.

It is an arithmetic number, because the mean of its divisors is an integer number (10368719946).

Almost surely, 2^86138350731 is an apocalyptic number.

86138350731 is a deficient number, since it is larger than the sum of its proper divisors (38286288621).

86138350731 is a wasteful number, since it uses less digits than its factorization.

86138350731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198250 (or 198247 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 86138350731 in words is "eighty-six billion, one hundred thirty-eight million, three hundred fifty thousand, seven hundred thirty-one".