155222243452 has 12 divisors (see below), whose sum is σ = 272206025280. Its totient is φ = 77449093376.

The previous prime is 155222243443. The next prime is 155222243467. The reversal of 155222243452 is 254342222551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40504933 + ... + 40508764.

It is an arithmetic number, because the mean of its divisors is an integer number (22683835440).

Almost surely, 2^155222243452 is an apocalyptic number.

It is an amenable number.

155222243452 is a deficient number, since it is larger than the sum of its proper divisors (116983781828).

155222243452 is a wasteful number, since it uses less digits than its factorization.

155222243452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81014180 (or 81014178 counting only the distinct ones).

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

The spelling of 155222243452 in words is "one hundred fifty-five billion, two hundred twenty-two million, two hundred forty-three thousand, four hundred fifty-two".