64137552187 has 2 divisors, whose sum is σ = 64137552188. Its totient is φ = 64137552186.

The previous prime is 64137552173. The next prime is 64137552197. The reversal of 64137552187 is 78125573146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64137552187 is a prime.

It is a super-2 number, since 2×64137552187² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64137552187.

It is not a weakly prime, because it can be changed into another prime (64137552197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32068776093 + 32068776094.

It is an arithmetic number, because the mean of its divisors is an integer number (32068776094).

Almost surely, 2^64137552187 is an apocalyptic number.

64137552187 is a deficient number, since it is larger than the sum of its proper divisors (1).

64137552187 is an equidigital number, since it uses as much as digits as its factorization.

64137552187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1411200, while the sum is 49.

The spelling of 64137552187 in words is "sixty-four billion, one hundred thirty-seven million, five hundred fifty-two thousand, one hundred eighty-seven".