65564321137 has 16 divisors (see below), whose sum is σ = 75870750592. Its totient is φ = 55497312000.

The previous prime is 65564321101. The next prime is 65564321167. The reversal of 65564321137 is 73112346556.

65564321137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65564321137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65564321093 and 65564321102.

It is not an unprimeable number, because it can be changed into a prime (65564321167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3864 + ... + 362137.

It is an arithmetic number, because the mean of its divisors is an integer number (4741921912).

Almost surely, 2^65564321137 is an apocalyptic number.

It is an amenable number.

65564321137 is a deficient number, since it is larger than the sum of its proper divisors (10306429455).

65564321137 is a wasteful number, since it uses less digits than its factorization.

65564321137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366328.

The product of its digits is 453600, while the sum is 43.

The spelling of 65564321137 in words is "sixty-five billion, five hundred sixty-four million, three hundred twenty-one thousand, one hundred thirty-seven".