64736274031 has 16 divisors (see below), whose sum is σ = 76082539680. Its totient is φ = 54303621120.

The previous prime is 64736274017. The next prime is 64736274041. The reversal of 64736274031 is 13047263746.

It is a cyclic number.

It is not a de Polignac number, because 64736274031 - 2¹⁵ = 64736241263 is a prime.

It is a super-2 number, since 2×64736274031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64736274011) 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 15 ways as a sum of consecutive naturals, for example, 300351 + ... + 468703.

It is an arithmetic number, because the mean of its divisors is an integer number (4755158730).

Almost surely, 2^64736274031 is an apocalyptic number.

64736274031 is a deficient number, since it is larger than the sum of its proper divisors (11346265649).

64736274031 is a wasteful number, since it uses less digits than its factorization.

64736274031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171066.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 64736274031 in words is "sixty-four billion, seven hundred thirty-six million, two hundred seventy-four thousand, thirty-one".