155922919601 has 4 divisors (see below), whose sum is σ = 156544126704. Its totient is φ = 155301712500.

The previous prime is 155922919561. The next prime is 155922919643. The reversal of 155922919601 is 106919229551.

155922919601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 106919229551 = 79 ⋅1353407969.

It is a cyclic number.

It is not a de Polignac number, because 155922919601 - 2³⁴ = 138743050417 is a prime.

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 155922919601.

It is not an unprimeable number, because it can be changed into a prime (155922909601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310603175 + ... + 310603676.

It is an arithmetic number, because the mean of its divisors is an integer number (39136031676).

Almost surely, 2^155922919601 is an apocalyptic number.

It is an amenable number.

155922919601 is a deficient number, since it is larger than the sum of its proper divisors (621207103).

155922919601 is an equidigital number, since it uses as much as digits as its factorization.

155922919601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621207102.

The product of its (nonzero) digits is 437400, while the sum is 50.

The spelling of 155922919601 in words is "one hundred fifty-five billion, nine hundred twenty-two million, nine hundred nineteen thousand, six hundred one".