15791900040 has 192 divisors, whose sum is σ = 58758860160. Its totient is φ = 3603225600.

The previous prime is 15791900011. The next prime is 15791900063. The reversal of 15791900040 is 4000919751.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 15791899968 and 15791900004.

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, 1509307 + ... + 1519733.

It is an arithmetic number, because the mean of its divisors is an integer number (306035730).

Almost surely, 2^15791900040 is an apocalyptic number.

15791900040 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 15791900040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29379430080).

15791900040 is an abundant number, since it is smaller than the sum of its proper divisors (42966960120).

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

15791900040 is a wasteful number, since it uses less digits than its factorization.

15791900040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11052 (or 11045 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 15791900040 in words is "fifteen billion, seven hundred ninety-one million, nine hundred thousand, forty".