27772231870 has 16 divisors (see below), whose sum is σ = 50371622928. Its totient is φ = 11024091520.

The previous prime is 27772231867. The next prime is 27772231943. The reversal of 27772231870 is 7813227772.

It is a self number, because there is not a number n which added to its sum of digits gives 27772231870.

It is a congruent number.

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, 10598779 + ... + 10601398.

It is an arithmetic number, because the mean of its divisors is an integer number (3148226433).

Almost surely, 2^27772231870 is an apocalyptic number.

27772231870 is a deficient number, since it is larger than the sum of its proper divisors (22599391058).

27772231870 is a wasteful number, since it uses less digits than its factorization.

27772231870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21200315.

The product of its (nonzero) digits is 460992, while the sum is 46.

The spelling of 27772231870 in words is "twenty-seven billion, seven hundred seventy-two million, two hundred thirty-one thousand, eight hundred seventy".