155235252480 has 1152 divisors, whose sum is σ = 663739453440. Its totient is φ = 29931601920.

The previous prime is 155235252479. The next prime is 155235252533. The reversal of 155235252480 is 84252532551.

It is a super-2 number, since 2×155235252480² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 447363667 + ... + 447364013.

It is an arithmetic number, because the mean of its divisors is an integer number (576162720).

Almost surely, 2^155235252480 is an apocalyptic number.

155235252480 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 155235252480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331869726720).

155235252480 is an abundant number, since it is smaller than the sum of its proper divisors (508504200960).

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

155235252480 is a wasteful number, since it uses less digits than its factorization.

155235252480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

The spelling of 155235252480 in words is "one hundred fifty-five billion, two hundred thirty-five million, two hundred fifty-two thousand, four hundred eighty".