700788311161 has 27 divisors (see below), whose sum is σ = 778573710733. Its totient is φ = 630594039680.

The previous prime is 700788311141. The next prime is 700788311173. The reversal of 700788311161 is 161113887007.

The square root of 700788311161 is 837131.

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

It can be written as a sum of positive squares in 4 ways, for example, as 405456930025 + 295331381136 = 636755^2 + 543444^2 .

It is not a de Polignac number, because 700788311161 - 2⁵ = 700788311129 is a prime.

It is a super-2 number, since 2×700788311161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (700788311141) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 327317151 + ... + 327319291.

Almost surely, 2^700788311161 is an apocalyptic number.

700788311161 is the 837131-st square number.

700788311161 is the 418566-th centered octagonal number.

It is an amenable number.

700788311161 is a deficient number, since it is larger than the sum of its proper divisors (77785399572).

700788311161 is an frugal number, since it uses more digits than its factorization.

700788311161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362 (or 2181 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 43.

The spelling of 700788311161 in words is "seven hundred billion, seven hundred eighty-eight million, three hundred eleven thousand, one hundred sixty-one".