27764251389 has 16 divisors (see below), whose sum is σ = 47008256640. Its totient is φ = 15865286400.

The previous prime is 27764251387. The next prime is 27764251393. The reversal of 27764251389 is 98315246772.

It is a happy number.

27764251389 is a `hidden beast` number, since 2 + 7 + 7 + 6 + 4 + 251 + 389 = 666.

It is not a de Polignac number, because 27764251389 - 2¹ = 27764251387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27764251387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73450212 + ... + 73450589.

It is an arithmetic number, because the mean of its divisors is an integer number (2938016040).

Almost surely, 2^27764251389 is an apocalyptic number.

It is an amenable number.

27764251389 is a deficient number, since it is larger than the sum of its proper divisors (19244005251).

27764251389 is a wasteful number, since it uses less digits than its factorization.

27764251389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146900817 (or 146900811 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 27764251389 in words is "twenty-seven billion, seven hundred sixty-four million, two hundred fifty-one thousand, three hundred eighty-nine".