64939039154 has 48 divisors (see below), whose sum is σ = 113173700640. Its totient is φ = 27847670400.

The previous prime is 64939039133. The next prime is 64939039169. The reversal of 64939039154 is 45193093946.

It is a junction number, because it is equal to n+sod(n) for n = 64939039096 and 64939039105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1078817 + ... + 1137419.

It is an arithmetic number, because the mean of its divisors is an integer number (2357785430).

Almost surely, 2^64939039154 is an apocalyptic number.

64939039154 is a deficient number, since it is larger than the sum of its proper divisors (48234661486).

64939039154 is a wasteful number, since it uses less digits than its factorization.

64939039154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58887 (or 58876 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 53.

The spelling of 64939039154 in words is "sixty-four billion, nine hundred thirty-nine million, thirty-nine thousand, one hundred fifty-four".