27140372661 has 16 divisors (see below), whose sum is σ = 36709424640. Its totient is φ = 17834059200.

The previous prime is 27140372641. The next prime is 27140372681. The reversal of 27140372661 is 16627304172.

It is an interprime number because it is at equal distance from previous prime (27140372641) and next prime (27140372681).

It is not a de Polignac number, because 27140372661 - 2¹⁷ = 27140241589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27140372641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133266 + ... + 268403.

It is an arithmetic number, because the mean of its divisors is an integer number (2294339040).

Almost surely, 2^27140372661 is an apocalyptic number.

It is an amenable number.

27140372661 is a deficient number, since it is larger than the sum of its proper divisors (9569051979).

27140372661 is a wasteful number, since it uses less digits than its factorization.

27140372661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401996.

The product of its (nonzero) digits is 84672, while the sum is 39.

The spelling of 27140372661 in words is "twenty-seven billion, one hundred forty million, three hundred seventy-two thousand, six hundred sixty-one".