64072608641 has 12 divisors (see below), whose sum is σ = 65361668400. Its totient is φ = 62805593448.

The previous prime is 64072608623. The next prime is 64072608701. The reversal of 64072608641 is 14680627046.

64072608641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-64072608641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64072608592 and 64072608601.

It is not an unprimeable number, because it can be changed into a prime (64072608601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 830570 + ... + 904428.

It is an arithmetic number, because the mean of its divisors is an integer number (5446805700).

Almost surely, 2^64072608641 is an apocalyptic number.

It is an amenable number.

64072608641 is a deficient number, since it is larger than the sum of its proper divisors (1289059759).

64072608641 is an equidigital number, since it uses as much as digits as its factorization.

64072608641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74156 (or 74077 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 64072608641 in words is "sixty-four billion, seventy-two million, six hundred eight thousand, six hundred forty-one".