155232518459 has 4 divisors (see below), whose sum is σ = 161981758416. Its totient is φ = 148483278504.

The previous prime is 155232518447. The next prime is 155232518503. The reversal of 155232518459 is 954815232551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155232518459 - 2¹² = 155232514363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155232518359) 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, 3374619944 + ... + 3374619989.

It is an arithmetic number, because the mean of its divisors is an integer number (40495439604).

Almost surely, 2^155232518459 is an apocalyptic number.

155232518459 is a deficient number, since it is larger than the sum of its proper divisors (6749239957).

155232518459 is an equidigital number, since it uses as much as digits as its factorization.

155232518459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6749239956.

The product of its digits is 2160000, while the sum is 50.

The spelling of 155232518459 in words is "one hundred fifty-five billion, two hundred thirty-two million, five hundred eighteen thousand, four hundred fifty-nine".