27768728254 has 16 divisors (see below), whose sum is σ = 42998967792. Its totient is φ = 13441454208.

The previous prime is 27768728227. The next prime is 27768728261. The reversal of 27768728254 is 45282786772.

It is a super-2 number, since 2×27768728254² (a number of 22 digits) contains 22 as substring.

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, 1419009 + ... + 1438444.

It is an arithmetic number, because the mean of its divisors is an integer number (2687435487).

Almost surely, 2^27768728254 is an apocalyptic number.

27768728254 is a deficient number, since it is larger than the sum of its proper divisors (15230239538).

27768728254 is a wasteful number, since it uses less digits than its factorization.

27768728254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857611.

The product of its digits is 21073920, while the sum is 58.

The spelling of 27768728254 in words is "twenty-seven billion, seven hundred sixty-eight million, seven hundred twenty-eight thousand, two hundred fifty-four".