63400733898 has 16 divisors (see below), whose sum is σ = 126809022720. Its totient is φ = 21132318816.

The previous prime is 63400733897. The next prime is 63400733917. The reversal of 63400733898 is 89833700436.

It is a self number, because there is not a number n which added to its sum of digits gives 63400733898.

It is not an unprimeable number, because it can be changed into a prime (63400733897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202618 + ... + 409701.

It is an arithmetic number, because the mean of its divisors is an integer number (7925563920).

Almost surely, 2^63400733898 is an apocalyptic number.

63400733898 is an abundant number, since it is smaller than the sum of its proper divisors (63408288822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63400733898 is a wasteful number, since it uses less digits than its factorization.

63400733898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629581.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 63400733898 in words is "sixty-three billion, four hundred million, seven hundred thirty-three thousand, eight hundred ninety-eight".