15051243440 has 20 divisors (see below), whose sum is σ = 34994141184. Its totient is φ = 6020497344.

The previous prime is 15051243409. The next prime is 15051243443. The reversal of 15051243440 is 4434215051.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (15051243443) 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 3 ways as a sum of consecutive naturals, for example, 94070192 + ... + 94070351.

Almost surely, 2^15051243440 is an apocalyptic number.

15051243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15051243440 is an abundant number, since it is smaller than the sum of its proper divisors (19942897744).

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

15051243440 is a wasteful number, since it uses less digits than its factorization.

15051243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188140556 (or 188140550 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 15051243440 its reverse (4434215051), we get a palindrome (19485458491).

The spelling of 15051243440 in words is "fifteen billion, fifty-one million, two hundred forty-three thousand, four hundred forty".