63893772816874 has 128 divisors (see below), whose sum is σ = 136284838502400. Its totient is φ = 21621659028480.

The previous prime is 63893772816851. The next prime is 63893772816893. The reversal of 63893772816874 is 47861827739836.

It is a junction number, because it is equal to n+sod(n) for n = 63893772816794 and 63893772816803.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 136549087 + ... + 137016205.

It is an arithmetic number, because the mean of its divisors is an integer number (1064725300800).

Almost surely, 2^{63893772816874} is an apocalyptic number.

63893772816874 is an abundant number, since it is smaller than the sum of its proper divisors (72391065685526).

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

63893772816874 is a wasteful number, since it uses less digits than its factorization.

63893772816874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471188.

The product of its digits is 4096770048, while the sum is 79.

The spelling of 63893772816874 in words is "sixty-three trillion, eight hundred ninety-three billion, seven hundred seventy-two million, eight hundred sixteen thousand, eight hundred seventy-four".