155379680441 has 4 divisors (see below), whose sum is σ = 155385917412. Its totient is φ = 155373443472.

The previous prime is 155379680411. The next prime is 155379680447. The reversal of 155379680441 is 144086973551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144086973551 = 89 ⋅1618954759.

It can be written as a sum of positive squares in 2 ways, for example, as 136736508841 + 18643171600 = 369779^2 + 136540^2 .

It is a cyclic number.

It is not a de Polignac number, because 155379680441 - 2¹⁰ = 155379679417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155379680447) 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, 3080966 + ... + 3130991.

It is an arithmetic number, because the mean of its divisors is an integer number (38846479353).

Almost surely, 2^155379680441 is an apocalyptic number.

It is an amenable number.

155379680441 is a deficient number, since it is larger than the sum of its proper divisors (6236971).

155379680441 is an equidigital number, since it uses as much as digits as its factorization.

155379680441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236970.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 155379680441 in words is "one hundred fifty-five billion, three hundred seventy-nine million, six hundred eighty thousand, four hundred forty-one".