15791044381 has 16 divisors (see below), whose sum is σ = 19822694400. Its totient is φ = 12265287408.

The previous prime is 15791044369. The next prime is 15791044391. The reversal of 15791044381 is 18344019751.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15791044381 - 2⁷ = 15791044253 is a prime.

It is a super-2 number, since 2×15791044381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15791044331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2578021 + ... + 2584138.

It is an arithmetic number, because the mean of its divisors is an integer number (1238918400).

Almost surely, 2^15791044381 is an apocalyptic number.

It is an amenable number.

15791044381 is a deficient number, since it is larger than the sum of its proper divisors (4031650019).

15791044381 is a wasteful number, since it uses less digits than its factorization.

15791044381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5162208.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 15791044381 in words is "fifteen billion, seven hundred ninety-one million, forty-four thousand, three hundred eighty-one".