125803678138 has 16 divisors (see below), whose sum is σ = 191428997760. Its totient is φ = 61996802400.

The previous prime is 125803678127. The next prime is 125803678139. The reversal of 125803678138 is 831876308521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125803678139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607003 + ... + 787438.

It is an arithmetic number, because the mean of its divisors is an integer number (11964312360).

Almost surely, 2^125803678138 is an apocalyptic number.

125803678138 is a deficient number, since it is larger than the sum of its proper divisors (65625319622).

125803678138 is a wasteful number, since it uses less digits than its factorization.

125803678138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395093.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 125803678138 in words is "one hundred twenty-five billion, eight hundred three million, six hundred seventy-eight thousand, one hundred thirty-eight".