63817934079 has 8 divisors (see below), whose sum is σ = 85916701312. Its totient is φ = 42132228120.

The previous prime is 63817934069. The next prime is 63817934083. The reversal of 63817934079 is 97043971836.

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

It is not a de Polignac number, because 63817934079 - 2¹³ = 63817925887 is a prime.

It is a super-2 number, since 2×63817934079² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63817934029) 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, 103264957 + ... + 103265574.

It is an arithmetic number, because the mean of its divisors is an integer number (10739587664).

Almost surely, 2^63817934079 is an apocalyptic number.

63817934079 is a deficient number, since it is larger than the sum of its proper divisors (22098767233).

63817934079 is a wasteful number, since it uses less digits than its factorization.

63817934079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206530637.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 63817934079 in words is "sixty-three billion, eight hundred seventeen million, nine hundred thirty-four thousand, seventy-nine".