155424545523 has 48 divisors (see below), whose sum is σ = 257931180000. Its totient is φ = 92347661952.

The previous prime is 155424545489. The next prime is 155424545599. The reversal of 155424545523 is 325545424551.

155424545523 is a `hidden beast` number, since 1 + 5 + 5 + 42 + 4 + 54 + 552 + 3 = 666.

It is not a de Polignac number, because 155424545523 - 2⁸ = 155424545267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155424545723) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 454948 + ... + 719601.

It is an arithmetic number, because the mean of its divisors is an integer number (5373566250).

Almost surely, 2^155424545523 is an apocalyptic number.

155424545523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155424545523 is a deficient number, since it is larger than the sum of its proper divisors (102506634477).

155424545523 is a wasteful number, since it uses less digits than its factorization.

155424545523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174613 (or 1174594 counting only the distinct ones).

The product of its digits is 2400000, while the sum is 45.

The spelling of 155424545523 in words is "one hundred fifty-five billion, four hundred twenty-four million, five hundred forty-five thousand, five hundred twenty-three".