963491179978 has 4 divisors (see below), whose sum is σ = 1445236769970. Its totient is φ = 481745589988.

The previous prime is 963491179949. The next prime is 963491180017. The reversal of 963491179978 is 879971194369.

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

It can be written as a sum of positive squares in only one way, i.e., 929483025409 + 34008154569 = 964097^2 + 184413^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 963491179978.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240872794993 + ... + 240872794996.

Almost surely, 2^963491179978 is an apocalyptic number.

963491179978 is a deficient number, since it is larger than the sum of its proper divisors (481745589992).

963491179978 is a wasteful number, since it uses less digits than its factorization.

963491179978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481745589991.

The product of its digits is 185177664, while the sum is 73.

The spelling of 963491179978 in words is "nine hundred sixty-three billion, four hundred ninety-one million, one hundred seventy-nine thousand, nine hundred seventy-eight".