979151942561 has 8 divisors (see below), whose sum is σ = 1057458498600. Its totient is φ = 901272125952.

The previous prime is 979151942543. The next prime is 979151942567. The reversal of 979151942561 is 165249151979.

979151942561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 257236624225 + 721915318336 = 507185^2 + 849656^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979151942561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 979151942561.

It is not an unprimeable number, because it can be changed into a prime (979151942567) 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, 106680086 + ... + 106689263.

It is an arithmetic number, because the mean of its divisors is an integer number (132182312325).

Almost surely, 2^979151942561 is an apocalyptic number.

It is an amenable number.

979151942561 is a deficient number, since it is larger than the sum of its proper divisors (78306556039).

979151942561 is a wasteful number, since it uses less digits than its factorization.

979151942561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213369715.

The product of its digits is 6123600, while the sum is 59.

The spelling of 979151942561 in words is "nine hundred seventy-nine billion, one hundred fifty-one million, nine hundred forty-two thousand, five hundred sixty-one".