63640775245416 has 64 divisors (see below), whose sum is σ = 163166221169280. Its totient is φ = 20672853995520.

The previous prime is 63640775245393. The next prime is 63640775245417. The reversal of 63640775245416 is 61454257704636.

It is a self number, because there is not a number n which added to its sum of digits gives 63640775245416.

It is not an unprimeable number, because it can be changed into a prime (63640775245417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35584681 + ... + 37330296.

It is an arithmetic number, because the mean of its divisors is an integer number (2549472205770).

Almost surely, 2^{63640775245416} is an apocalyptic number.

It is an amenable number.

63640775245416 is an abundant number, since it is smaller than the sum of its proper divisors (99525445923864).

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

63640775245416 is a wasteful number, since it uses less digits than its factorization.

63640775245416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72915914 (or 72915910 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 60.

The spelling of 63640775245416 in words is "sixty-three trillion, six hundred forty billion, seven hundred seventy-five million, two hundred forty-five thousand, four hundred sixteen".