138200015651 has 4 divisors (see below), whose sum is σ = 142658080704. Its totient is φ = 133741950600.

The previous prime is 138200015599. The next prime is 138200015669. The reversal of 138200015651 is 156510002831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138200015651 - 2²² = 138195821347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138200015671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2229032480 + ... + 2229032541.

It is an arithmetic number, because the mean of its divisors is an integer number (35664520176).

Almost surely, 2^138200015651 is an apocalyptic number.

138200015651 is a deficient number, since it is larger than the sum of its proper divisors (4458065053).

138200015651 is an equidigital number, since it uses as much as digits as its factorization.

138200015651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458065052.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 138200015651 in words is "one hundred thirty-eight billion, two hundred million, fifteen thousand, six hundred fifty-one".