151512499991 has 2 divisors, whose sum is σ = 151512499992. Its totient is φ = 151512499990.

The previous prime is 151512499987. The next prime is 151512500039. The reversal of 151512499991 is 199994215151.

151512499991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151512499991 - 2² = 151512499987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151512499091) 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, 75756249995 + 75756249996.

It is an arithmetic number, because the mean of its divisors is an integer number (75756249996).

Almost surely, 2^151512499991 is an apocalyptic number.

151512499991 is a deficient number, since it is larger than the sum of its proper divisors (1).

151512499991 is an equidigital number, since it uses as much as digits as its factorization.

151512499991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 56.

The spelling of 151512499991 in words is "one hundred fifty-one billion, five hundred twelve million, four hundred ninety-nine thousand, nine hundred ninety-one".