63977109212447 has 8 divisors (see below), whose sum is σ = 64509654138336. Its totient is φ = 63445514413312.

The previous prime is 63977109212363. The next prime is 63977109212473. The reversal of 63977109212447 is 74421290177936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63977109212447 - 2²⁸ = 63976840776991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63977109212447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63977109211447) 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, 237396458 + ... + 237665799.

It is an arithmetic number, because the mean of its divisors is an integer number (8063706767292).

Almost surely, 2^{63977109212447} is an apocalyptic number.

63977109212447 is a deficient number, since it is larger than the sum of its proper divisors (532544925889).

63977109212447 is a wasteful number, since it uses less digits than its factorization.

63977109212447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475063377.

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 63977109212447 in words is "sixty-three trillion, nine hundred seventy-seven billion, one hundred nine million, two hundred twelve thousand, four hundred forty-seven".