155113315400 has 96 divisors (see below), whose sum is σ = 365021090280. Its totient is φ = 61294080000.

The previous prime is 155113315381. The next prime is 155113315417. The reversal of 155113315400 is 4513311551.

It can be written as a sum of positive squares in 12 ways, for example, as 81952803076 + 73160512324 = 286274^2 + 270482^2 .

It is a super-2 number, since 2×155113315400² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9303872 + ... + 9320528.

Almost surely, 2^155113315400 is an apocalyptic number.

155113315400 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 155113315400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182510545140).

155113315400 is an abundant number, since it is smaller than the sum of its proper divisors (209907774880).

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

155113315400 is a wasteful number, since it uses less digits than its factorization.

155113315400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17235 (or 17226 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 155113315400 its reverse (4513311551), we get a palindrome (159626626951).

The spelling of 155113315400 in words is "one hundred fifty-five billion, one hundred thirteen million, three hundred fifteen thousand, four hundred".