155379680442 has 192 divisors, whose sum is σ = 411109171200. Its totient is φ = 41425862400.

The previous prime is 155379680411. The next prime is 155379680447. The reversal of 155379680442 is 244086973551.

It is a happy number.

155379680442 is a `hidden beast` number, since 1 + 5 + 5 + 37 + 96 + 80 + 442 = 666.

It is not an unprimeable number, because it can be changed into a prime (155379680447) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 113664043 + ... + 113665409.

It is an arithmetic number, because the mean of its divisors is an integer number (2141193600).

It is a 1-persistent number, because it is pandigital, but 2⋅155379680442 = 310759360884 is not.

Almost surely, 2^155379680442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155379680442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205554585600).

155379680442 is an abundant number, since it is smaller than the sum of its proper divisors (255729490758).

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

155379680442 is a wasteful number, since it uses less digits than its factorization.

155379680442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 155379680442 in words is "one hundred fifty-five billion, three hundred seventy-nine million, six hundred eighty thousand, four hundred forty-two".