27396764779401 has 24 divisors (see below), whose sum is σ = 40211814951360. Its totient is φ = 17971979422176.

The previous prime is 27396764779369. The next prime is 27396764779453. The reversal of 27396764779401 is 10497746769372.

27396764779401 is a `hidden beast` number, since 2 + 7 + 3 + 9 + 67 + 6 + 477 + 94 + 0 + 1 = 666.

It is not a de Polignac number, because 27396764779401 - 2⁵ = 27396764779369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27396764779401.

It is not an unprimeable number, because it can be changed into a prime (27396764779301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93976191 + ... + 94267268.

It is an arithmetic number, because the mean of its divisors is an integer number (1675492289640).

Almost surely, 2^{27396764779401} is an apocalyptic number.

It is an amenable number.

27396764779401 is a deficient number, since it is larger than the sum of its proper divisors (12815050171959).

27396764779401 is a wasteful number, since it uses less digits than its factorization.

27396764779401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188243725 (or 188243722 counting only the distinct ones).

The product of its (nonzero) digits is 672126336, while the sum is 72.

The spelling of 27396764779401 in words is "twenty-seven trillion, three hundred ninety-six billion, seven hundred sixty-four million, seven hundred seventy-nine thousand, four hundred one".