155113771344 has 160 divisors (see below), whose sum is σ = 484765163520. Its totient is φ = 41794776576.

The previous prime is 155113771339. The next prime is 155113771481. The reversal of 155113771344 is 443177311551.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 155113771296 and 155113771305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233889 + ... + 604095.

It is an arithmetic number, because the mean of its divisors is an integer number (3029782272).

Almost surely, 2^155113771344 is an apocalyptic number.

155113771344 is a gapful number since it is divisible by the number (14) 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 155113771344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242382581760).

155113771344 is an abundant number, since it is smaller than the sum of its proper divisors (329651392176).

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

155113771344 is a wasteful number, since it uses less digits than its factorization.

155113771344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370297 (or 370291 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The spelling of 155113771344 in words is "one hundred fifty-five billion, one hundred thirteen million, seven hundred seventy-one thousand, three hundred forty-four".