11631405357161 has 8 divisors (see below), whose sum is σ = 11859447275784. Its totient is φ = 11403681269760.

The previous prime is 11631405357139. The next prime is 11631405357181. The reversal of 11631405357161 is 16175350413611.

It can be written as a sum of positive squares in 4 ways, for example, as 6665014825561 + 4966390531600 = 2581669^2 + 2228540^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11631405357161 - 2³⁸ = 11356527450217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11631405357181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79383896 + ... + 79530281.

It is an arithmetic number, because the mean of its divisors is an integer number (1482430909473).

Almost surely, 2^{11631405357161} is an apocalyptic number.

It is an amenable number.

11631405357161 is a deficient number, since it is larger than the sum of its proper divisors (228041918623).

11631405357161 is a wasteful number, since it uses less digits than its factorization.

11631405357161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158915611.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 11631405357161 in words is "eleven trillion, six hundred thirty-one billion, four hundred five million, three hundred fifty-seven thousand, one hundred sixty-one".