79918763645741 has 16 divisors (see below), whose sum is σ = 83641350507120. Its totient is φ = 76298685112320.

The previous prime is 79918763645737. The next prime is 79918763645759. The reversal of 79918763645741 is 14754636781997.

It can be written as a sum of positive squares in 8 ways, for example, as 6147052455625 + 73771711190116 = 2479325^2 + 8589046^2 .

It is a cyclic number.

It is not a de Polignac number, because 79918763645741 - 2² = 79918763645737 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 (79918763695741) 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, 112540646 + ... + 113248551.

It is an arithmetic number, because the mean of its divisors is an integer number (5227584406695).

Almost surely, 2^{79918763645741} is an apocalyptic number.

It is an amenable number.

79918763645741 is a deficient number, since it is larger than the sum of its proper divisors (3722586861379).

79918763645741 is a wasteful number, since it uses less digits than its factorization.

79918763645741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225789424.

The product of its digits is 1920360960, while the sum is 77.

The spelling of 79918763645741 in words is "seventy-nine trillion, nine hundred eighteen billion, seven hundred sixty-three million, six hundred forty-five thousand, seven hundred forty-one".