63078877478 has 4 divisors (see below), whose sum is σ = 94618316220. Its totient is φ = 31539438738.

The previous prime is 63078877439. The next prime is 63078877489. The reversal of 63078877478 is 87477887036.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15769719368 + ... + 15769719371.

It is an arithmetic number, because the mean of its divisors is an integer number (23654579055).

Almost surely, 2^63078877478 is an apocalyptic number.

63078877478 is a deficient number, since it is larger than the sum of its proper divisors (31539438742).

63078877478 is a wasteful number, since it uses less digits than its factorization.

63078877478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31539438741.

The product of its (nonzero) digits is 88510464, while the sum is 65.

The spelling of 63078877478 in words is "sixty-three billion, seventy-eight million, eight hundred seventy-seven thousand, four hundred seventy-eight".