157320513619 has 4 divisors (see below), whose sum is σ = 157362258040. Its totient is φ = 157278769200.

The previous prime is 157320513611. The next prime is 157320513631. The reversal of 157320513619 is 916315023751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916315023751 = 135403 ⋅6767317.

It is a cyclic number.

It is not a de Polignac number, because 157320513619 - 2³ = 157320513611 is a prime.

It is a super-2 number, since 2×157320513619² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157320513611) 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, 20866557 + ... + 20874094.

It is an arithmetic number, because the mean of its divisors is an integer number (39340564510).

Almost surely, 2^157320513619 is an apocalyptic number.

157320513619 is a deficient number, since it is larger than the sum of its proper divisors (41744421).

157320513619 is an equidigital number, since it uses as much as digits as its factorization.

157320513619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41744420.

The product of its (nonzero) digits is 170100, while the sum is 43.

The spelling of 157320513619 in words is "one hundred fifty-seven billion, three hundred twenty million, five hundred thirteen thousand, six hundred nineteen".