64118235378 has 64 divisors (see below), whose sum is σ = 133579487232. Its totient is φ = 20501257920.

The previous prime is 64118235367. The next prime is 64118235439. The reversal of 64118235378 is 87353281146.

It is a super-2 number, since 2×64118235378² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19293625 + ... + 19296947.

It is an arithmetic number, because the mean of its divisors is an integer number (2087179488).

Almost surely, 2^64118235378 is an apocalyptic number.

64118235378 is an abundant number, since it is smaller than the sum of its proper divisors (69461251854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64118235378 is a wasteful number, since it uses less digits than its factorization.

64118235378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719.

The product of its digits is 967680, while the sum is 48.

The spelling of 64118235378 in words is "sixty-four billion, one hundred eighteen million, two hundred thirty-five thousand, three hundred seventy-eight".