63947456398 has 16 divisors (see below), whose sum is σ = 110175091200. Its totient is φ = 27268332696.

The previous prime is 63947456389. The next prime is 63947456429. The reversal of 63947456398 is 89365474936.

It is a super-2 number, since 2×63947456398² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11473786 + ... + 11479357.

It is an arithmetic number, because the mean of its divisors is an integer number (6885943200).

Almost surely, 2^63947456398 is an apocalyptic number.

63947456398 is a deficient number, since it is larger than the sum of its proper divisors (46227634802).

63947456398 is a wasteful number, since it uses less digits than its factorization.

63947456398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22953351.

The product of its digits is 117573120, while the sum is 64.

The spelling of 63947456398 in words is "sixty-three billion, nine hundred forty-seven million, four hundred fifty-six thousand, three hundred ninety-eight".