64137857830 has 32 divisors (see below), whose sum is σ = 119448432000. Its totient is φ = 24766476672.

The previous prime is 64137857789. The next prime is 64137857857. The reversal of 64137857830 is 3875873146.

It is a super-2 number, since 2×64137857830² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2291299 + ... + 2319121.

It is an arithmetic number, because the mean of its divisors is an integer number (3732763500).

Almost surely, 2^64137857830 is an apocalyptic number.

64137857830 is a deficient number, since it is larger than the sum of its proper divisors (55310574170).

64137857830 is a wasteful number, since it uses less digits than its factorization.

64137857830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35808.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 64137857830 in words is "sixty-four billion, one hundred thirty-seven million, eight hundred fifty-seven thousand, eight hundred thirty".