27405791275 has 12 divisors (see below), whose sum is σ = 34135579072. Its totient is φ = 21826311840.

The previous prime is 27405791201. The next prime is 27405791279. The reversal of 27405791275 is 57219750472.

It is a de Polignac number, because none of the positive numbers 2^k-27405791275 is a prime.

It is a super-2 number, since 2×27405791275² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27405791279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2452344 + ... + 2463493.

Almost surely, 2^27405791275 is an apocalyptic number.

27405791275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27405791275 is a deficient number, since it is larger than the sum of its proper divisors (6729787797).

27405791275 is a wasteful number, since it uses less digits than its factorization.

27405791275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916070 (or 4916065 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 49.

The spelling of 27405791275 in words is "twenty-seven billion, four hundred five million, seven hundred ninety-one thousand, two hundred seventy-five".