15394199040 has 800 divisors, whose sum is σ = 63848261664. Its totient is φ = 3503554560.

The previous prime is 15394198949. The next prime is 15394199071. The reversal of 15394199040 is 4099149351.

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

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 79 ways as a sum of consecutive naturals, for example, 38776122 + ... + 38776518.

Almost surely, 2^15394199040 is an apocalyptic number.

15394199040 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 15394199040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31924130832).

15394199040 is an abundant number, since it is smaller than the sum of its proper divisors (48454062624).

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

15394199040 is a wasteful number, since it uses less digits than its factorization.

15394199040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 15394199040 in words is "fifteen billion, three hundred ninety-four million, one hundred ninety-nine thousand, forty".