15349978400 has 288 divisors, whose sum is σ = 41341104000. Its totient is φ = 5542871040.

The previous prime is 15349978393. The next prime is 15349978433. The reversal of 15349978400 is 487994351.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42757421 + ... + 42757779.

It is an arithmetic number, because the mean of its divisors is an integer number (143545500).

Almost surely, 2^15349978400 is an apocalyptic number.

15349978400 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 15349978400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20670552000).

15349978400 is an abundant number, since it is smaller than the sum of its proper divisors (25991125600).

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

15349978400 is a wasteful number, since it uses less digits than its factorization.

15349978400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 15349978400 in words is "fifteen billion, three hundred forty-nine million, nine hundred seventy-eight thousand, four hundred".