15244997040 has 800 divisors, whose sum is σ = 66061771776. Its totient is φ = 3172608000.

The previous prime is 15244996967. The next prime is 15244997059. The reversal of 15244997040 is 4079944251.

15244997040 is a `hidden beast` number, since 1 + 52 + 4 + 499 + 70 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 60736915 + ... + 60737165.

Almost surely, 2^15244997040 is an apocalyptic number.

15244997040 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 15244997040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33030885888).

15244997040 is an abundant number, since it is smaller than the sum of its proper divisors (50816774736).

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

15244997040 is a wasteful number, since it uses less digits than its factorization.

15244997040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 15244997040 in words is "fifteen billion, two hundred forty-four million, nine hundred ninety-seven thousand, forty".