151156515581 has 2 divisors, whose sum is σ = 151156515582. Its totient is φ = 151156515580.

The previous prime is 151156515551. The next prime is 151156515593. The reversal of 151156515581 is 185515651151.

It is a happy number.

151156515581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85697293081 + 65459222500 = 292741^2 + 255850^2 .

It is a cyclic number.

It is not a de Polignac number, because 151156515581 - 2²² = 151152321277 is a prime.

It is a super-2 number, since 2×151156515581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151156515541) 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 as a sum of consecutive naturals, namely, 75578257790 + 75578257791.

It is an arithmetic number, because the mean of its divisors is an integer number (75578257791).

Almost surely, 2^151156515581 is an apocalyptic number.

It is an amenable number.

151156515581 is a deficient number, since it is larger than the sum of its proper divisors (1).

151156515581 is an equidigital number, since it uses as much as digits as its factorization.

151156515581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150000, while the sum is 44.

The spelling of 151156515581 in words is "one hundred fifty-one billion, one hundred fifty-six million, five hundred fifteen thousand, five hundred eighty-one".