155417716120 has 32 divisors (see below), whose sum is σ = 351520715520. Its totient is φ = 61841601280.

The previous prime is 155417716039. The next prime is 155417716121. The reversal of 155417716120 is 21617714551.

It is a happy number.

155417716120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155417716121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10163677 + ... + 10178956.

It is an arithmetic number, because the mean of its divisors is an integer number (10985022360).

Almost surely, 2^155417716120 is an apocalyptic number.

155417716120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155417716120 is an abundant number, since it is smaller than the sum of its proper divisors (196102999400).

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

155417716120 is a wasteful number, since it uses less digits than its factorization.

155417716120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20342835 (or 20342831 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 40.

The spelling of 155417716120 in words is "one hundred fifty-five billion, four hundred seventeen million, seven hundred sixteen thousand, one hundred twenty".