138762441187877 has 8 divisors (see below), whose sum is σ = 153475298777976. Its totient is φ = 124626558405312.

The previous prime is 138762441187861. The next prime is 138762441187889. The reversal of 138762441187877 is 778781144267831.

It can be written as a sum of positive squares in 4 ways, for example, as 43880542329121 + 94881898858756 = 6624239^2 + 9740734^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138762441187877 - 2⁴ = 138762441187861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138762441187807) 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, 144243701378 + ... + 144243702339.

It is an arithmetic number, because the mean of its divisors is an integer number (19184412347247).

Almost surely, 2^{138762441187877} is an apocalyptic number.

It is an amenable number.

138762441187877 is a deficient number, since it is larger than the sum of its proper divisors (14712857590099).

138762441187877 is a wasteful number, since it uses less digits than its factorization.

138762441187877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288487403767.

The product of its digits is 708083712, while the sum is 74.

The spelling of 138762441187877 in words is "one hundred thirty-eight trillion, seven hundred sixty-two billion, four hundred forty-one million, one hundred eighty-seven thousand, eight hundred seventy-seven".