154446561131 has 2 divisors, whose sum is σ = 154446561132. Its totient is φ = 154446561130.

The previous prime is 154446561077. The next prime is 154446561193. The reversal of 154446561131 is 131165644451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154446561131 is a prime.

It is a super-2 number, since 2×154446561131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (154446581131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77223280565 + 77223280566.

It is an arithmetic number, because the mean of its divisors is an integer number (77223280566).

Almost surely, 2^154446561131 is an apocalyptic number.

154446561131 is a deficient number, since it is larger than the sum of its proper divisors (1).

154446561131 is an equidigital number, since it uses as much as digits as its factorization.

154446561131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The spelling of 154446561131 in words is "one hundred fifty-four billion, four hundred forty-six million, five hundred sixty-one thousand, one hundred thirty-one".