27777338745 has 32 divisors (see below), whose sum is σ = 49156084992. Its totient is φ = 13305399552.

The previous prime is 27777338707. The next prime is 27777338759. The reversal of 27777338745 is 54783377772.

It is not a de Polignac number, because 27777338745 - 2⁸ = 27777338489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1917757 + ... + 1932186.

It is an arithmetic number, because the mean of its divisors is an integer number (1536127656).

Almost surely, 2^27777338745 is an apocalyptic number.

It is an amenable number.

27777338745 is a deficient number, since it is larger than the sum of its proper divisors (21378746247).

27777338745 is a wasteful number, since it uses less digits than its factorization.

27777338745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850001.

The product of its digits is 48404160, while the sum is 60.

The spelling of 27777338745 in words is "twenty-seven billion, seven hundred seventy-seven million, three hundred thirty-eight thousand, seven hundred forty-five".