15172210040 has 64 divisors (see below), whose sum is σ = 36840787200. Its totient is φ = 5590259712.

The previous prime is 15172209979. The next prime is 15172210057. The reversal of 15172210040 is 4001227151.

It is a junction number, because it is equal to n+sod(n) for n = 15172209988 and 15172210015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218624 + ... + 279536.

It is an arithmetic number, because the mean of its divisors is an integer number (575637300).

Almost surely, 2^15172210040 is an apocalyptic number.

15172210040 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 15172210040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18420393600).

15172210040 is an abundant number, since it is smaller than the sum of its proper divisors (21668577160).

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

15172210040 is a wasteful number, since it uses less digits than its factorization.

15172210040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61416 (or 61412 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

Adding to 15172210040 its reverse (4001227151), we get a palindrome (19173437191).

The spelling of 15172210040 in words is "fifteen billion, one hundred seventy-two million, two hundred ten thousand, forty".