138174697227 has 32 divisors (see below), whose sum is σ = 215840982528. Its totient is φ = 76991855616.

The previous prime is 138174697223. The next prime is 138174697261. The reversal of 138174697227 is 722796471831.

It is not a de Polignac number, because 138174697227 - 2² = 138174697223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138174697223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199398 + ... + 562235.

It is an arithmetic number, because the mean of its divisors is an integer number (6745030704).

Almost surely, 2^138174697227 is an apocalyptic number.

138174697227 is a deficient number, since it is larger than the sum of its proper divisors (77666285301).

138174697227 is a wasteful number, since it uses less digits than its factorization.

138174697227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761859.

The product of its digits is 7112448, while the sum is 57.

The spelling of 138174697227 in words is "one hundred thirty-eight billion, one hundred seventy-four million, six hundred ninety-seven thousand, two hundred twenty-seven".