15255078720 has 448 divisors, whose sum is σ = 58704967680. Its totient is φ = 3278610432.

The previous prime is 15255078719. The next prime is 15255078733. The reversal of 15255078720 is 2787055251.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20811474 + ... + 20812206.

Almost surely, 2^15255078720 is an apocalyptic number.

15255078720 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 15255078720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29352483840).

15255078720 is an abundant number, since it is smaller than the sum of its proper divisors (43449888960).

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

15255078720 is a wasteful number, since it uses less digits than its factorization.

15255078720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 932 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 42.

The spelling of 15255078720 in words is "fifteen billion, two hundred fifty-five million, seventy-eight thousand, seven hundred twenty".