1079169846561 has 9 divisors (see below), whose sum is σ = 1558805391091. Its totient is φ = 719444486712.

The previous prime is 1079169846527. The next prime is 1079169846571. The reversal of 1079169846561 is 1656489619701.

The square root of 1079169846561 is 1038831.

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

1079169846561 is a `hidden beast` number, since 1 + 0 + 7 + 9 + 1 + 69 + 8 + 4 + 6 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 780227723025 + 298942123536 = 883305^2 + 546756^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1079169846561 - 2⁹ = 1079169846049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1079169846511) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2943355 + ... + 3289631.

Almost surely, 2^{1079169846561} is an apocalyptic number.

1079169846561 is the 1038831-st square number.

1079169846561 is the 519416-th centered octagonal number.

It is an amenable number.

1079169846561 is a deficient number, since it is larger than the sum of its proper divisors (479635544530).

1079169846561 is an frugal number, since it uses more digits than its factorization.

1079169846561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692560 (or 346280 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 1079169846561 in words is "one trillion, seventy-nine billion, one hundred sixty-nine million, eight hundred forty-six thousand, five hundred sixty-one".