64477064650 has 24 divisors (see below), whose sum is σ = 120530008800. Its totient is φ = 25661219760.

The previous prime is 64477064629. The next prime is 64477064669. The reversal of 64477064650 is 5646077446.

64477064650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 64477064594 and 64477064603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3230104 + ... + 3250003.

It is an arithmetic number, because the mean of its divisors is an integer number (5022083700).

Almost surely, 2^64477064650 is an apocalyptic number.

64477064650 is a deficient number, since it is larger than the sum of its proper divisors (56052944150).

64477064650 is a wasteful number, since it uses less digits than its factorization.

64477064650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6480318 (or 6480313 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 64477064650 in words is "sixty-four billion, four hundred seventy-seven million, sixty-four thousand, six hundred fifty".