27261954664 has 32 divisors (see below), whose sum is σ = 61854857280. Its totient is φ = 10996418304.

The previous prime is 27261954641. The next prime is 27261954691. The reversal of 27261954664 is 46645916272.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14317302 + ... + 14319205.

It is an arithmetic number, because the mean of its divisors is an integer number (1932964290).

Almost surely, 2^27261954664 is an apocalyptic number.

It is an amenable number.

27261954664 is an abundant number, since it is smaller than the sum of its proper divisors (34592902616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27261954664 is a wasteful number, since it uses less digits than its factorization.

27261954664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28636537 (or 28636533 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 52.

The spelling of 27261954664 in words is "twenty-seven billion, two hundred sixty-one million, nine hundred fifty-four thousand, six hundred sixty-four".