31566025066145 has 8 divisors (see below), whose sum is σ = 38254271961960. Its totient is φ = 25002792131200.

The previous prime is 31566025066129. The next prime is 31566025066157. The reversal of 31566025066145 is 54166052066513.

It can be written as a sum of positive squares in 4 ways, for example, as 12531713280256 + 19034311785889 = 3540016^2 + 4362833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31566025066145 - 2⁴ = 31566025066129 is a prime.

It is a super-2 number, since 2×31566025066145² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31566025066093 and 31566025066102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31253489660 + ... + 31253490669.

It is an arithmetic number, because the mean of its divisors is an integer number (4781783995245).

Almost surely, 2^{31566025066145} is an apocalyptic number.

It is an amenable number.

31566025066145 is a deficient number, since it is larger than the sum of its proper divisors (6688246895815).

31566025066145 is a wasteful number, since it uses less digits than its factorization.

31566025066145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62506980435.

The product of its (nonzero) digits is 3888000, while the sum is 50.

The spelling of 31566025066145 in words is "thirty-one trillion, five hundred sixty-six billion, twenty-five million, sixty-six thousand, one hundred forty-five".