151519990991 has 2 divisors, whose sum is σ = 151519990992. Its totient is φ = 151519990990.

The previous prime is 151519990987. The next prime is 151519991047. The reversal of 151519990991 is 199099915151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151519990991 - 2² = 151519990987 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 151519990991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151519990691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75759995495 + 75759995496.

It is an arithmetic number, because the mean of its divisors is an integer number (75759995496).

Almost surely, 2^151519990991 is an apocalyptic number.

151519990991 is a deficient number, since it is larger than the sum of its proper divisors (1).

151519990991 is an equidigital number, since it uses as much as digits as its factorization.

151519990991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1476225, while the sum is 59.

The spelling of 151519990991 in words is "one hundred fifty-one billion, five hundred nineteen million, nine hundred ninety thousand, nine hundred ninety-one".