155135554003120 has 80 divisors (see below), whose sum is σ = 362634889256640. Its totient is φ = 61720510745600.

The previous prime is 155135554003109. The next prime is 155135554003123. The reversal of 155135554003120 is 21300455531551.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is not an unprimeable number, because it can be changed into a prime (155135554003123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4706826 + ... + 18232534.

It is an arithmetic number, because the mean of its divisors is an integer number (4532936115708).

Almost surely, 2^{155135554003120} is an apocalyptic number.

155135554003120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155135554003120 is an abundant number, since it is smaller than the sum of its proper divisors (207499335253520).

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

155135554003120 is a wasteful number, since it uses less digits than its factorization.

155135554003120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13526494 (or 13526488 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 155135554003120 in words is "one hundred fifty-five trillion, one hundred thirty-five billion, five hundred fifty-four million, three thousand, one hundred twenty".