64178634748 has 12 divisors (see below), whose sum is σ = 112571996320. Its totient is φ = 32015207232.

The previous prime is 64178634731. The next prime is 64178634781. The reversal of 64178634748 is 84743687146.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64178634692 and 64178634701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18525588 + ... + 18529051.

Almost surely, 2^64178634748 is an apocalyptic number.

It is an amenable number.

64178634748 is a deficient number, since it is larger than the sum of its proper divisors (48393361572).

64178634748 is a wasteful number, since it uses less digits than its factorization.

64178634748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37055076 (or 37055074 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 58.

The spelling of 64178634748 in words is "sixty-four billion, one hundred seventy-eight million, six hundred thirty-four thousand, seven hundred forty-eight".