15040551400 has 96 divisors (see below), whose sum is σ = 40642488000. Its totient is φ = 5069329920.

The previous prime is 15040551377. The next prime is 15040551403. The reversal of 15040551400 is 415504051.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (15040551403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8445 + ... + 173644.

It is an arithmetic number, because the mean of its divisors is an integer number (423359250).

Almost surely, 2^15040551400 is an apocalyptic number.

15040551400 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 15040551400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20321244000).

15040551400 is an abundant number, since it is smaller than the sum of its proper divisors (25601936600).

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

15040551400 is a wasteful number, since it uses less digits than its factorization.

15040551400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182171 (or 182162 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 15040551400 in words is "fifteen billion, forty million, five hundred fifty-one thousand, four hundred".