63958940875397 has 4 divisors (see below), whose sum is σ = 64023480675456. Its totient is φ = 63894401075340.

The previous prime is 63958940875373. The next prime is 63958940875411. The reversal of 63958940875397 is 79357804985936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63958940875397 - 2³⁸ = 63684062968453 is a prime.

It is a super-2 number, since 2×63958940875397² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63958940875097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32269898543 + ... + 32269900524.

It is an arithmetic number, because the mean of its divisors is an integer number (16005870168864).

Almost surely, 2^{63958940875397} is an apocalyptic number.

It is an amenable number.

63958940875397 is a deficient number, since it is larger than the sum of its proper divisors (64539800059).

63958940875397 is an equidigital number, since it uses as much as digits as its factorization.

63958940875397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64539800058.

The product of its (nonzero) digits is 12345177600, while the sum is 83.

The spelling of 63958940875397 in words is "sixty-three trillion, nine hundred fifty-eight billion, nine hundred forty million, eight hundred seventy-five thousand, three hundred ninety-seven".