151516821413 has 4 divisors (see below), whose sum is σ = 151746045708. Its totient is φ = 151287597120.

The previous prime is 151516821397. The next prime is 151516821427. The reversal of 151516821413 is 314128615151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141810236929 + 9706584484 = 376577^2 + 98522^2 .

It is a cyclic number.

It is not a de Polignac number, because 151516821413 - 2⁴ = 151516821397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151516821613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114611156 + ... + 114612477.

It is an arithmetic number, because the mean of its divisors is an integer number (37936511427).

Almost surely, 2^151516821413 is an apocalyptic number.

It is an amenable number.

151516821413 is a deficient number, since it is larger than the sum of its proper divisors (229224295).

151516821413 is an equidigital number, since it uses as much as digits as its factorization.

151516821413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229224294.

The product of its digits is 28800, while the sum is 38.

The spelling of 151516821413 in words is "one hundred fifty-one billion, five hundred sixteen million, eight hundred twenty-one thousand, four hundred thirteen".