155662117312 has 224 divisors, whose sum is σ = 371398995072. Its totient is φ = 63998263296.

The previous prime is 155662117279. The next prime is 155662117319. The reversal of 155662117312 is 213711266551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155662117319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31552798 + ... + 31557730.

It is an arithmetic number, because the mean of its divisors is an integer number (1658031228).

Almost surely, 2^155662117312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155662117312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185699497536).

155662117312 is an abundant number, since it is smaller than the sum of its proper divisors (215736877760).

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

155662117312 is a wasteful number, since it uses less digits than its factorization.

155662117312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095 (or 5085 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The spelling of 155662117312 in words is "one hundred fifty-five billion, six hundred sixty-two million, one hundred seventeen thousand, three hundred twelve".