27664021254 has 16 divisors (see below), whose sum is σ = 55334422080. Its totient is φ = 9220277160.

The previous prime is 27664021219. The next prime is 27664021267. The reversal of 27664021254 is 45212046672.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208492 + ... + 314319.

It is an arithmetic number, because the mean of its divisors is an integer number (3458401380).

Almost surely, 2^27664021254 is an apocalyptic number.

27664021254 is an abundant number, since it is smaller than the sum of its proper divisors (27670400826).

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

27664021254 is a wasteful number, since it uses less digits than its factorization.

27664021254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531635.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 27664021254 in words is "twenty-seven billion, six hundred sixty-four million, twenty-one thousand, two hundred fifty-four".