151613011681 has 2 divisors, whose sum is σ = 151613011682. Its totient is φ = 151613011680.

The previous prime is 151613011643. The next prime is 151613011729. The reversal of 151613011681 is 186110316151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150059390625 + 1553621056 = 387375^2 + 39416^2 .

It is a cyclic number.

It is not a de Polignac number, because 151613011681 - 2¹³ = 151613003489 is a prime.

It is a super-2 number, since 2×151613011681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151613011601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75806505840 + 75806505841.

It is an arithmetic number, because the mean of its divisors is an integer number (75806505841).

Almost surely, 2^151613011681 is an apocalyptic number.

It is an amenable number.

151613011681 is a deficient number, since it is larger than the sum of its proper divisors (1).

151613011681 is an equidigital number, since it uses as much as digits as its factorization.

151613011681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 34.

The spelling of 151613011681 in words is "one hundred fifty-one billion, six hundred thirteen million, eleven thousand, six hundred eighty-one".