138880770363767 has 4 divisors (see below), whose sum is σ = 139178159594136. Its totient is φ = 138583381133400.

The previous prime is 138880770363719. The next prime is 138880770363781. The reversal of 138880770363767 is 767363077088831.

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 138880770363767 - 2²⁰ = 138880769315191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138880770363694 and 138880770363703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138880770363367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148694614484 + ... + 148694615417.

It is an arithmetic number, because the mean of its divisors is an integer number (34794539898534).

Almost surely, 2^{138880770363767} is an apocalyptic number.

138880770363767 is a deficient number, since it is larger than the sum of its proper divisors (297389230369).

138880770363767 is an equidigital number, since it uses as much as digits as its factorization.

138880770363767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297389230368.

The product of its (nonzero) digits is 1194891264, while the sum is 74.

The spelling of 138880770363767 in words is "one hundred thirty-eight trillion, eight hundred eighty billion, seven hundred seventy million, three hundred sixty-three thousand, seven hundred sixty-seven".