15447274452 has 30 divisors (see below), whose sum is σ = 40382227578. Its totient is φ = 5149091376.

The previous prime is 15447274441. The next prime is 15447274471. The reversal of 15447274452 is 25447274451.

15447274452 is a `hidden beast` number, since 154 + 47 + 2 + 7 + 4 + 452 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10008801936 + 5438472516 = 100044^2 + 73746^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15447274398 and 15447274407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23838063 + ... + 23838710.

Almost surely, 2^15447274452 is an apocalyptic number.

15447274452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15447274452 is an abundant number, since it is smaller than the sum of its proper divisors (24934953126).

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

15447274452 is a wasteful number, since it uses less digits than its factorization.

15447274452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47676789 (or 47676778 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 45.

Subtracting 15447274452 from its reverse (25447274451), we obtain a palindrome (9999999999).

The spelling of 15447274452 in words is "fifteen billion, four hundred forty-seven million, two hundred seventy-four thousand, four hundred fifty-two".