64157046838 has 32 divisors (see below), whose sum is σ = 98714004480. Its totient is φ = 31263563520.

The previous prime is 64157046799. The next prime is 64157046857. The reversal of 64157046838 is 83864075146.

64157046838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64157046838² (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, 14308945 + ... + 14313427.

It is an arithmetic number, because the mean of its divisors is an integer number (3084812640).

Almost surely, 2^64157046838 is an apocalyptic number.

64157046838 is a deficient number, since it is larger than the sum of its proper divisors (34556957642).

64157046838 is a wasteful number, since it uses less digits than its factorization.

64157046838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5692.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 64157046838 in words is "sixty-four billion, one hundred fifty-seven million, forty-six thousand, eight hundred thirty-eight".