155016274400 has 144 divisors (see below), whose sum is σ = 414226487808. Its totient is φ = 56298240000.

The previous prime is 155016274397. The next prime is 155016274447. The reversal of 155016274400 is 4472610551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 512225 + ... + 756575.

It is an arithmetic number, because the mean of its divisors is an integer number (2876572832).

Almost surely, 2^155016274400 is an apocalyptic number.

155016274400 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 155016274400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207113243904).

155016274400 is an abundant number, since it is smaller than the sum of its proper divisors (259210213408).

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

155016274400 is a wasteful number, since it uses less digits than its factorization.

155016274400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244445 (or 244432 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

Adding to 155016274400 its reverse (4472610551), we get a palindrome (159488884951).

The spelling of 155016274400 in words is "one hundred fifty-five billion, sixteen million, two hundred seventy-four thousand, four hundred".