15671381855 has 8 divisors (see below), whose sum is σ = 18806330112. Its totient is φ = 12536657568.

The previous prime is 15671381809. The next prime is 15671381909. The reversal of 15671381855 is 55818317651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15671381855 - 2⁸ = 15671381599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247682 + ... + 304448.

It is an arithmetic number, because the mean of its divisors is an integer number (2350791264).

Almost surely, 2^15671381855 is an apocalyptic number.

15671381855 is a deficient number, since it is larger than the sum of its proper divisors (3134948257).

15671381855 is an equidigital number, since it uses as much as digits as its factorization.

15671381855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111985.

The product of its digits is 1008000, while the sum is 50.

The spelling of 15671381855 in words is "fifteen billion, six hundred seventy-one million, three hundred eighty-one thousand, eight hundred fifty-five".