155251051320 has 128 divisors (see below), whose sum is σ = 479232671040. Its totient is φ = 40206274560.

The previous prime is 155251051301. The next prime is 155251051327. The reversal of 155251051320 is 23150152551.

155251051320 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 (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155251051327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2369724 + ... + 2434356.

Almost surely, 2^155251051320 is an apocalyptic number.

155251051320 is a gapful number since it is divisible by the number (10) 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 155251051320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239616335520).

155251051320 is an abundant number, since it is smaller than the sum of its proper divisors (323981619720).

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

155251051320 is a wasteful number, since it uses less digits than its factorization.

155251051320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65225 (or 65221 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The spelling of 155251051320 in words is "one hundred fifty-five billion, two hundred fifty-one million, fifty-one thousand, three hundred twenty".