155223044452 has 24 divisors (see below), whose sum is σ = 313294224320. Its totient is φ = 65913847200.

The previous prime is 155223044443. The next prime is 155223044477. The reversal of 155223044452 is 254440322551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25426674 + ... + 25432777.

Almost surely, 2^155223044452 is an apocalyptic number.

It is an amenable number.

155223044452 is an abundant number, since it is smaller than the sum of its proper divisors (158071179868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155223044452 is a wasteful number, since it uses less digits than its factorization.

155223044452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50859571 (or 50859569 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 155223044452 in words is "one hundred fifty-five billion, two hundred twenty-three million, forty-four thousand, four hundred fifty-two".