700015015561 has 9 divisors (see below), whose sum is σ = 706964293389. Its totient is φ = 693133413036.

The previous prime is 700015015543. The next prime is 700015015571. The reversal of 700015015561 is 165510510007.

The square root of 700015015561 is 836669.

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

700015015561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 700015015561 - 2³⁷ = 562576062089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (700015015571) 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, 86172846 + ... + 86180968.

Almost surely, 2^700015015561 is an apocalyptic number.

700015015561 is the 836669-th square number.

700015015561 is the 418335-th centered octagonal number.

It is an amenable number.

700015015561 is a deficient number, since it is larger than the sum of its proper divisors (6949277828).

700015015561 is an frugal number, since it uses more digits than its factorization.

700015015561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16452 (or 8226 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 31.

Adding to 700015015561 its reverse (165510510007), we get a palindrome (865525525568).

The spelling of 700015015561 in words is "seven hundred billion, fifteen million, fifteen thousand, five hundred sixty-one".