156001055601 has 4 divisors (see below), whose sum is σ = 208001407472. Its totient is φ = 104000703732.

The previous prime is 156001055597. The next prime is 156001055603. The reversal of 156001055601 is 106550100651.

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 not a de Polignac number, because 156001055601 - 2² = 156001055597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156001055603) 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, 26000175931 + ... + 26000175936.

It is an arithmetic number, because the mean of its divisors is an integer number (52000351868).

Almost surely, 2^156001055601 is an apocalyptic number.

It is an amenable number.

156001055601 is a deficient number, since it is larger than the sum of its proper divisors (52000351871).

156001055601 is an equidigital number, since it uses as much as digits as its factorization.

156001055601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52000351870.

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 156001055601 in words is "one hundred fifty-six billion, one million, fifty-five thousand, six hundred one".