5951204161081 has 9 divisors (see below), whose sum is σ = 6163567710573. Its totient is φ = 5745921918240.

The previous prime is 5951204161061. The next prime is 5951204161109. The reversal of 5951204161081 is 1801614021595.

The square root of 5951204161081 is 2439509.

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 1951444157481 + 3999760003600 = 1396941^2 + 1999940^2 .

It is not a de Polignac number, because 5951204161081 - 2⁷ = 5951204160953 is a prime.

It is a super-2 number, since 2×5951204161081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5951204161031) 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, 70703701 + ... + 70787821.

Almost surely, 2^{5951204161081} is an apocalyptic number.

5951204161081 is the 2439509-th square number.

5951204161081 is the 1219755-th centered octagonal number.

It is an amenable number.

5951204161081 is a deficient number, since it is larger than the sum of its proper divisors (212363549492).

5951204161081 is an frugal number, since it uses more digits than its factorization.

5951204161081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168300 (or 84150 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 43.

The spelling of 5951204161081 in words is "five trillion, nine hundred fifty-one billion, two hundred four million, one hundred sixty-one thousand, eighty-one".