64706744140387 has 2 divisors, whose sum is σ = 64706744140388. Its totient is φ = 64706744140386.

The previous prime is 64706744140303. The next prime is 64706744140393. The reversal of 64706744140387 is 78304144760746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64706744140387 - 2³⁹ = 64156988326499 is a prime.

It is not a weakly prime, because it can be changed into another prime (64706744140187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32353372070193 + 32353372070194.

It is an arithmetic number, because the mean of its divisors is an integer number (32353372070194).

Almost surely, 2^{64706744140387} is an apocalyptic number.

64706744140387 is a deficient number, since it is larger than the sum of its proper divisors (1).

64706744140387 is an equidigital number, since it uses as much as digits as its factorization.

64706744140387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75866112, while the sum is 61.

The spelling of 64706744140387 in words is "sixty-four trillion, seven hundred six billion, seven hundred forty-four million, one hundred forty thousand, three hundred eighty-seven".