979270555561 has 3 divisors (see below), whose sum is σ = 979271545143. Its totient is φ = 979269565980.

The previous prime is 979270555537. The next prime is 979270555649. The reversal of 979270555561 is 165555072979.

The square root of 979270555561 is 989581.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 520806145561 + 458464410000 = 721669^2 + 677100^2 .

It is not a de Polignac number, because 979270555561 - 2³¹ = 977123071913 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 979270555561.

It is not an unprimeable number, because it can be changed into a prime (979270555511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 494791 + ... + 1484371.

It is an arithmetic number, because the mean of its divisors is an integer number (326423848381).

Almost surely, 2^979270555561 is an apocalyptic number.

979270555561 is the 989581-st square number.

979270555561 is the 494791-st centered octagonal number.

It is an amenable number.

979270555561 is a deficient number, since it is larger than the sum of its proper divisors (989582).

979270555561 is an frugal number, since it uses more digits than its factorization.

979270555561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979162 (or 989581 counting only the distinct ones).

The product of its (nonzero) digits is 29767500, while the sum is 61.

The spelling of 979270555561 in words is "nine hundred seventy-nine billion, two hundred seventy million, five hundred fifty-five thousand, five hundred sixty-one".