63613352257 has 32 divisors (see below), whose sum is σ = 80257653504. Its totient is φ = 49070361600.

The previous prime is 63613352233. The next prime is 63613352261. The reversal of 63613352257 is 75225331636.

It is a de Polignac number, because none of the positive numbers 2^k-63613352257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63613353257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6416098 + ... + 6426004.

It is an arithmetic number, because the mean of its divisors is an integer number (2508051672).

Almost surely, 2^63613352257 is an apocalyptic number.

It is an amenable number.

63613352257 is a deficient number, since it is larger than the sum of its proper divisors (16644301247).

63613352257 is a wasteful number, since it uses less digits than its factorization.

63613352257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11689.

The product of its digits is 680400, while the sum is 43.

The spelling of 63613352257 in words is "sixty-three billion, six hundred thirteen million, three hundred fifty-two thousand, two hundred fifty-seven".