155101145500 has 288 divisors, whose sum is σ = 403744461120. Its totient is φ = 51885926400.

The previous prime is 155101145491. The next prime is 155101145519. The reversal of 155101145500 is 5541101551.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 180981072 + ... + 180981928.

It is an arithmetic number, because the mean of its divisors is an integer number (1401890490).

Almost surely, 2^155101145500 is an apocalyptic number.

155101145500 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 155101145500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201872230560).

155101145500 is an abundant number, since it is smaller than the sum of its proper divisors (248643315620).

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

155101145500 is a wasteful number, since it uses less digits than its factorization.

155101145500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 155101145500 in words is "one hundred fifty-five billion, one hundred one million, one hundred forty-five thousand, five hundred".