63979724077 has 16 divisors (see below), whose sum is σ = 71113766400. Its totient is φ = 57286033920.

The previous prime is 63979724071. The next prime is 63979724093. The reversal of 63979724077 is 77042797936.

It is a cyclic number.

It is not a de Polignac number, because 63979724077 - 2¹⁵ = 63979691309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63979724071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 997752 + ... + 1059937.

It is an arithmetic number, because the mean of its divisors is an integer number (4444610400).

Almost surely, 2^63979724077 is an apocalyptic number.

It is an amenable number.

63979724077 is a deficient number, since it is larger than the sum of its proper divisors (7134042323).

63979724077 is a wasteful number, since it uses less digits than its factorization.

63979724077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057796.

The product of its (nonzero) digits is 28005264, while the sum is 61.

The spelling of 63979724077 in words is "sixty-three billion, nine hundred seventy-nine million, seven hundred twenty-four thousand, seventy-seven".