156810608641 has 4 divisors (see below), whose sum is σ = 157631606784. Its totient is φ = 155989610500.

The previous prime is 156810608623. The next prime is 156810608677. The reversal of 156810608641 is 146806018651.

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.

It is a cyclic number.

It is not a de Polignac number, because 156810608641 - 2¹³ = 156810600449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156810608591 and 156810608600.

It is not an unprimeable number, because it can be changed into a prime (156810608341) 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, 410498785 + ... + 410499166.

It is an arithmetic number, because the mean of its divisors is an integer number (39407901696).

Almost surely, 2^156810608641 is an apocalyptic number.

It is an amenable number.

156810608641 is a deficient number, since it is larger than the sum of its proper divisors (820998143).

156810608641 is an equidigital number, since it uses as much as digits as its factorization.

156810608641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820998142.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 156810608641 in words is "one hundred fifty-six billion, eight hundred ten million, six hundred eight thousand, six hundred forty-one".