138200631945 has 32 divisors (see below), whose sum is σ = 221704419072. Its totient is φ = 73512686592.

The previous prime is 138200631941. The next prime is 138200631977. The reversal of 138200631945 is 549136002831.

It is not a de Polignac number, because 138200631945 - 2² = 138200631941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138200631897 and 138200631906.

It is not an unprimeable number, because it can be changed into a prime (138200631941) 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, 27026709 + ... + 27031821.

It is an arithmetic number, because the mean of its divisors is an integer number (6928263096).

Almost surely, 2^138200631945 is an apocalyptic number.

138200631945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138200631945 is a deficient number, since it is larger than the sum of its proper divisors (83503787127).

138200631945 is a wasteful number, since it uses less digits than its factorization.

138200631945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9521.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 138200631945 in words is "one hundred thirty-eight billion, two hundred million, six hundred thirty-one thousand, nine hundred forty-five".