155321123356 has 36 divisors (see below), whose sum is σ = 334788815088. Its totient is φ = 62650535808.

The previous prime is 155321123341. The next prime is 155321123359. The reversal of 155321123356 is 653321123551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155321123359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23304160 + ... + 23310823.

It is an arithmetic number, because the mean of its divisors is an integer number (9299689308).

Almost surely, 2^155321123356 is an apocalyptic number.

It is an amenable number.

155321123356 is an abundant number, since it is smaller than the sum of its proper divisors (179467691732).

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

155321123356 is a wasteful number, since it uses less digits than its factorization.

155321123356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46615018 (or 46615009 counting only the distinct ones).

The product of its digits is 81000, while the sum is 37.

The spelling of 155321123356 in words is "one hundred fifty-five billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred fifty-six".