15994053771 has 16 divisors (see below), whose sum is σ = 21634763136. Its totient is φ = 10508256576.

The previous prime is 15994053767. The next prime is 15994053847. The reversal of 15994053771 is 17735049951.

It is not a de Polignac number, because 15994053771 - 2² = 15994053767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15994053701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252516 + ... + 309438.

It is an arithmetic number, because the mean of its divisors is an integer number (1352172696).

Almost surely, 2^15994053771 is an apocalyptic number.

15994053771 is a deficient number, since it is larger than the sum of its proper divisors (5640709365).

15994053771 is a wasteful number, since it uses less digits than its factorization.

15994053771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58282.

The product of its (nonzero) digits is 1190700, while the sum is 51.

The spelling of 15994053771 in words is "fifteen billion, nine hundred ninety-four million, fifty-three thousand, seven hundred seventy-one".