27726851405 has 16 divisors (see below), whose sum is σ = 36300235968. Its totient is φ = 20163168000.

The previous prime is 27726851363. The next prime is 27726851441. The reversal of 27726851405 is 50415862772.

It is not a de Polignac number, because 27726851405 - 2⁸ = 27726851149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27726851405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056290 + ... + 1082220.

It is an arithmetic number, because the mean of its divisors is an integer number (2268764748).

Almost surely, 2^27726851405 is an apocalyptic number.

It is an amenable number.

27726851405 is a deficient number, since it is larger than the sum of its proper divisors (8573384563).

27726851405 is a wasteful number, since it uses less digits than its factorization.

27726851405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45388.

The product of its (nonzero) digits is 940800, while the sum is 47.

The spelling of 27726851405 in words is "twenty-seven billion, seven hundred twenty-six million, eight hundred fifty-one thousand, four hundred five".