155145112224520 has 96 divisors (see below), whose sum is σ = 383703152938560. Its totient is φ = 56415302697600.

The previous prime is 155145112224481. The next prime is 155145112224569. The reversal of 155145112224520 is 25422211541551.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272028055 + ... + 272597785.

It is an arithmetic number, because the mean of its divisors is an integer number (3996907843110).

Almost surely, 2^{155145112224520} is an apocalyptic number.

155145112224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155145112224520 is an abundant number, since it is smaller than the sum of its proper divisors (228558040714040).

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

155145112224520 is a wasteful number, since it uses less digits than its factorization.

155145112224520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626027 (or 626012 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 40.

The spelling of 155145112224520 in words is "one hundred fifty-five trillion, one hundred forty-five billion, one hundred twelve million, two hundred twenty-four thousand, five hundred twenty".