27640003679 has 2 divisors, whose sum is σ = 27640003680. Its totient is φ = 27640003678.

The previous prime is 27640003663. The next prime is 27640003747. The reversal of 27640003679 is 97630004672.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27640003679 - 2⁴ = 27640003663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27640003609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13820001839 + 13820001840.

It is an arithmetic number, because the mean of its divisors is an integer number (13820001840).

Almost surely, 2^27640003679 is an apocalyptic number.

27640003679 is a deficient number, since it is larger than the sum of its proper divisors (1).

27640003679 is an equidigital number, since it uses as much as digits as its factorization.

27640003679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 27640003679 in words is "twenty-seven billion, six hundred forty million, three thousand, six hundred seventy-nine".