63630979313 has 4 divisors (see below), whose sum is σ = 69415613808. Its totient is φ = 57846344820.

The previous prime is 63630979267. The next prime is 63630979333. The reversal of 63630979313 is 31397903636.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63630979313 - 2⁸ = 63630979057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63630979333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2892317231 + ... + 2892317252.

It is an arithmetic number, because the mean of its divisors is an integer number (17353903452).

Almost surely, 2^63630979313 is an apocalyptic number.

It is an amenable number.

63630979313 is a deficient number, since it is larger than the sum of its proper divisors (5784634495).

63630979313 is a wasteful number, since it uses less digits than its factorization.

63630979313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784634494.

The product of its (nonzero) digits is 1653372, while the sum is 50.

The spelling of 63630979313 in words is "sixty-three billion, six hundred thirty million, nine hundred seventy-nine thousand, three hundred thirteen".