15181240452 has 192 divisors, whose sum is σ = 42916823040. Its totient is φ = 4086319104.

The previous prime is 15181240439. The next prime is 15181240457. The reversal of 15181240452 is 25404218151.

It is a super-2 number, since 2×15181240452² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15181240457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15045324 + ... + 15046332.

It is an arithmetic number, because the mean of its divisors is an integer number (223525120).

Almost surely, 2^15181240452 is an apocalyptic number.

15181240452 is a gapful number since it is divisible by the number (12) 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 15181240452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21458411520).

15181240452 is an abundant number, since it is smaller than the sum of its proper divisors (27735582588).

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

15181240452 is a wasteful number, since it uses less digits than its factorization.

15181240452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The spelling of 15181240452 in words is "fifteen billion, one hundred eighty-one million, two hundred forty thousand, four hundred fifty-two".