70855518969 has 9 divisors (see below), whose sum is σ = 102348014223. Its totient is φ = 47236480272.

The previous prime is 70855518959. The next prime is 70855518977. The reversal of 70855518969 is 96981555807.

The square root of 70855518969 is 266187.

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

70855518969 is a `hidden beast` number, since 7 + 0 + 8 + 55 + 518 + 9 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10575448569 + 60280070400 = 102837^2 + 245520^2 .

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

It is not a de Polignac number, because 70855518969 - 2¹³ = 70855510777 is a prime.

It is a super-2 number, since 2×70855518969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70855518959) 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, 754197 + ... + 842925.

Almost surely, 2^70855518969 is an apocalyptic number.

70855518969 is the 266187-th square number.

70855518969 is the 133094-th centered octagonal number.

It is an amenable number.

70855518969 is a deficient number, since it is larger than the sum of its proper divisors (31492495254).

70855518969 is an frugal number, since it uses more digits than its factorization.

70855518969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177464 (or 88732 counting only the distinct ones).

The product of its (nonzero) digits is 27216000, while the sum is 63.

It can be divided in two parts, 70855 and 518969, that added together give a square (589824 = 768²).

The spelling of 70855518969 in words is "seventy billion, eight hundred fifty-five million, five hundred eighteen thousand, nine hundred sixty-nine".