64791940837 has 16 divisors (see below), whose sum is σ = 70927194240. Its totient is φ = 58825166400.

The previous prime is 64791940823. The next prime is 64791940847. The reversal of 64791940837 is 73804919746.

It is not a de Polignac number, because 64791940837 - 2⁷ = 64791940709 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 (64791940847) 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, 305214 + ... + 471952.

It is an arithmetic number, because the mean of its divisors is an integer number (4432949640).

Almost surely, 2^64791940837 is an apocalyptic number.

It is an amenable number.

64791940837 is a deficient number, since it is larger than the sum of its proper divisors (6135253403).

64791940837 is a wasteful number, since it uses less digits than its factorization.

64791940837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167244.

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 64791940837 in words is "sixty-four billion, seven hundred ninety-one million, nine hundred forty thousand, eight hundred thirty-seven".