64157023527923 has 2 divisors, whose sum is σ = 64157023527924. Its totient is φ = 64157023527922.

The previous prime is 64157023527881. The next prime is 64157023527929. The reversal of 64157023527923 is 32972532075146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64157023527923 is a prime.

It is a super-2 number, since 2×64157023527923² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64157023527929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32078511763961 + 32078511763962.

It is an arithmetic number, because the mean of its divisors is an integer number (32078511763962).

Almost surely, 2^{64157023527923} is an apocalyptic number.

64157023527923 is a deficient number, since it is larger than the sum of its proper divisors (1).

64157023527923 is an equidigital number, since it uses as much as digits as its factorization.

64157023527923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 56.

The spelling of 64157023527923 in words is "sixty-four trillion, one hundred fifty-seven billion, twenty-three million, five hundred twenty-seven thousand, nine hundred twenty-three".