64757876387 has 2 divisors, whose sum is σ = 64757876388. Its totient is φ = 64757876386.

The previous prime is 64757876369. The next prime is 64757876411. The reversal of 64757876387 is 78367875746.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64757876387 - 2¹⁰ = 64757875363 is a prime.

It is not a weakly prime, because it can be changed into another prime (64757876357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32378938193 + 32378938194.

It is an arithmetic number, because the mean of its divisors is an integer number (32378938194).

Almost surely, 2^64757876387 is an apocalyptic number.

64757876387 is a deficient number, since it is larger than the sum of its proper divisors (1).

64757876387 is an equidigital number, since it uses as much as digits as its factorization.

64757876387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331914240, while the sum is 68.

The spelling of 64757876387 in words is "sixty-four billion, seven hundred fifty-seven million, eight hundred seventy-six thousand, three hundred eighty-seven".