156959449919 has 8 divisors (see below), whose sum is σ = 159483832368. Its totient is φ = 154440411840.

The previous prime is 156959449897. The next prime is 156959449921. The reversal of 156959449919 is 919944959651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156959449919 - 2⁸ = 156959449663 is a prime.

It is a super-2 number, since 2×156959449919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156959449949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276862 + ... + 1394379.

It is an arithmetic number, because the mean of its divisors is an integer number (19935479046).

Almost surely, 2^156959449919 is an apocalyptic number.

156959449919 is a deficient number, since it is larger than the sum of its proper divisors (2524382449).

156959449919 is an equidigital number, since it uses as much as digits as its factorization.

156959449919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672185.

The product of its digits is 141717600, while the sum is 71.

The spelling of 156959449919 in words is "one hundred fifty-six billion, nine hundred fifty-nine million, four hundred forty-nine thousand, nine hundred nineteen".