156242216417 has 4 divisors (see below), whose sum is σ = 178562533056. Its totient is φ = 133921899780.

The previous prime is 156242216399. The next prime is 156242216423. The reversal of 156242216417 is 714612242651.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 714612242651 = 193 ⋅3702654107.

It is a cyclic number.

It is not a de Polignac number, because 156242216417 - 2³² = 151947249121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156242216477) 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, 11160158309 + ... + 11160158322.

It is an arithmetic number, because the mean of its divisors is an integer number (44640633264).

Almost surely, 2^156242216417 is an apocalyptic number.

It is an amenable number.

156242216417 is a deficient number, since it is larger than the sum of its proper divisors (22320316639).

156242216417 is an equidigital number, since it uses as much as digits as its factorization.

156242216417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22320316638.

The product of its digits is 161280, while the sum is 41.

The spelling of 156242216417 in words is "one hundred fifty-six billion, two hundred forty-two million, two hundred sixteen thousand, four hundred seventeen".