27156431793 has 8 divisors (see below), whose sum is σ = 36281140000. Its totient is φ = 18068005728.

The previous prime is 27156431723. The next prime is 27156431831. The reversal of 27156431793 is 39713465172.

It is a happy number.

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

It is not a de Polignac number, because 27156431793 - 2²⁵ = 27122877361 is a prime.

It is a super-2 number, since 2×27156431793² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27156431723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9068788 + ... + 9071781.

It is an arithmetic number, because the mean of its divisors is an integer number (4535142500).

Almost surely, 2^27156431793 is an apocalyptic number.

It is an amenable number.

27156431793 is a deficient number, since it is larger than the sum of its proper divisors (9124708207).

27156431793 is a wasteful number, since it uses less digits than its factorization.

27156431793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141071.

The product of its digits is 952560, while the sum is 48.

The spelling of 27156431793 in words is "twenty-seven billion, one hundred fifty-six million, four hundred thirty-one thousand, seven hundred ninety-three".