155042035523 has 4 divisors (see below), whose sum is σ = 160388312640. Its totient is φ = 149695758408.

The previous prime is 155042035513. The next prime is 155042035531. The reversal of 155042035523 is 325530240551.

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 155042035523 - 2²² = 155037841219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155042035513) 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, 2673138515 + ... + 2673138572.

It is an arithmetic number, because the mean of its divisors is an integer number (40097078160).

Almost surely, 2^155042035523 is an apocalyptic number.

155042035523 is a deficient number, since it is larger than the sum of its proper divisors (5346277117).

155042035523 is an equidigital number, since it uses as much as digits as its factorization.

155042035523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346277116.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 155042035523 in words is "one hundred fifty-five billion, forty-two million, thirty-five thousand, five hundred twenty-three".