138701670052 has 24 divisors (see below), whose sum is σ = 265076773920. Its totient is φ = 62978909760.

The previous prime is 138701670047. The next prime is 138701670053. The reversal of 138701670052 is 250076107831.

It is a junction number, because it is equal to n+sod(n) for n = 138701669987 and 138701670014.

It is not an unprimeable number, because it can be changed into a prime (138701670053) 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, 1640902 + ... + 1723357.

It is an arithmetic number, because the mean of its divisors is an integer number (11044865580).

Almost surely, 2^138701670052 is an apocalyptic number.

It is an amenable number.

138701670052 is a deficient number, since it is larger than the sum of its proper divisors (126375103868).

138701670052 is a wasteful number, since it uses less digits than its factorization.

138701670052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365211 (or 3365209 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

Adding to 138701670052 its reverse (250076107831), we get a palindrome (388777777883).

The spelling of 138701670052 in words is "one hundred thirty-eight billion, seven hundred one million, six hundred seventy thousand, fifty-two".