138762310321766 has 4 divisors (see below), whose sum is σ = 208143465482652. Its totient is φ = 69381155160882.

The previous prime is 138762310321721. The next prime is 138762310321771. The reversal of 138762310321766 is 667123013267831.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34690577580440 + ... + 34690577580443.

It is an arithmetic number, because the mean of its divisors is an integer number (52035866370663).

Almost surely, 2^{138762310321766} is an apocalyptic number.

138762310321766 is a deficient number, since it is larger than the sum of its proper divisors (69381155160886).

138762310321766 is an equidigital number, since it uses as much as digits as its factorization.

138762310321766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69381155160885.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 138762310321766 in words is "one hundred thirty-eight trillion, seven hundred sixty-two billion, three hundred ten million, three hundred twenty-one thousand, seven hundred sixty-six".