15121244052 has 24 divisors (see below), whose sum is σ = 39203225600. Its totient is φ = 5040414648.

The previous prime is 15121244051. The next prime is 15121244057. The reversal of 15121244052 is 25044212151.

It is a happy number.

15121244052 is a `hidden beast` number, since 1 + 5 + 1 + 212 + 440 + 5 + 2 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15121244051) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 70005652 + ... + 70005867.

Almost surely, 2^15121244052 is an apocalyptic number.

15121244052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15121244052 is an abundant number, since it is smaller than the sum of its proper divisors (24081981548).

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

15121244052 is a wasteful number, since it uses less digits than its factorization.

15121244052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140011532 (or 140011524 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 15121244052 in words is "fifteen billion, one hundred twenty-one million, two hundred forty-four thousand, fifty-two".