151115420399 has 4 divisors (see below), whose sum is σ = 151116221664. Its totient is φ = 151114619136.

The previous prime is 151115420377. The next prime is 151115420437. The reversal of 151115420399 is 993024511151.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 993024511151 = 129469 ⋅7669979.

It is a cyclic number.

It is not a de Polignac number, because 151115420399 - 2²⁰ = 151114371823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151115420329) 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, 54959 + ... + 552495.

It is an arithmetic number, because the mean of its divisors is an integer number (37779055416).

Almost surely, 2^151115420399 is an apocalyptic number.

151115420399 is a deficient number, since it is larger than the sum of its proper divisors (801265).

151115420399 is an equidigital number, since it uses as much as digits as its factorization.

151115420399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801264.

The product of its (nonzero) digits is 48600, while the sum is 41.

The spelling of 151115420399 in words is "one hundred fifty-one billion, one hundred fifteen million, four hundred twenty thousand, three hundred ninety-nine".