155834122992 has 80 divisors (see below), whose sum is σ = 416612858880. Its totient is φ = 50134291200.

The previous prime is 155834122981. The next prime is 155834123017. The reversal of 155834122992 is 299221438551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3865017 + ... + 3905127.

It is an arithmetic number, because the mean of its divisors is an integer number (5207660736).

Almost surely, 2^155834122992 is an apocalyptic number.

155834122992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155834122992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208306429440).

155834122992 is an abundant number, since it is smaller than the sum of its proper divisors (260778735888).

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

155834122992 is a wasteful number, since it uses less digits than its factorization.

155834122992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42942 (or 42936 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 51.

The spelling of 155834122992 in words is "one hundred fifty-five billion, eight hundred thirty-four million, one hundred twenty-two thousand, nine hundred ninety-two".