156401012433 has 4 divisors (see below), whose sum is σ = 208534683248. Its totient is φ = 104267341620.

The previous prime is 156401012381. The next prime is 156401012461. The reversal of 156401012433 is 334210104651.

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: 334210104651 = 3 ⋅111403368217.

It is not a de Polignac number, because 156401012433 - 2⁸ = 156401012177 is a prime.

It is a super-2 number, since 2×156401012433² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156401012433.

It is not an unprimeable number, because it can be changed into a prime (156401012633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26066835403 + ... + 26066835408.

It is an arithmetic number, because the mean of its divisors is an integer number (52133670812).

Almost surely, 2^156401012433 is an apocalyptic number.

It is an amenable number.

156401012433 is a deficient number, since it is larger than the sum of its proper divisors (52133670815).

156401012433 is an equidigital number, since it uses as much as digits as its factorization.

156401012433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52133670814.

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 156401012433 in words is "one hundred fifty-six billion, four hundred one million, twelve thousand, four hundred thirty-three".