15120211300400 has 120 divisors (see below), whose sum is σ = 36924812442000. Its totient is φ = 5948453606400.

The previous prime is 15120211300399. The next prime is 15120211300423. The reversal of 15120211300400 is 400311202151.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 533345426 + ... + 533373774.

It is an arithmetic number, because the mean of its divisors is an integer number (307706770350).

Almost surely, 2^{15120211300400} is an apocalyptic number.

15120211300400 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 15120211300400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18462406221000).

15120211300400 is an abundant number, since it is smaller than the sum of its proper divisors (21804601141600).

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

15120211300400 is a wasteful number, since it uses less digits than its factorization.

15120211300400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50287 (or 50276 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 15120211300400 its reverse (400311202151), we get a palindrome (15520522502551).

The spelling of 15120211300400 in words is "fifteen trillion, one hundred twenty billion, two hundred eleven million, three hundred thousand, four hundred".