138261057783 has 8 divisors (see below), whose sum is σ = 195192081648. Its totient is φ = 86752036224.

The previous prime is 138261057757. The next prime is 138261057793. The reversal of 138261057783 is 387750162831.

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

It is not a de Polignac number, because 138261057783 - 2⁸ = 138261057527 is a prime.

It is a super-2 number, since 2×138261057783² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 2711001133 = 138261057783 / (1 + 3 + 8 + 2 + 6 + 1 + 0 + 5 + 7 + 7 + 8 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138261057703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1355500516 + ... + 1355500617.

It is an arithmetic number, because the mean of its divisors is an integer number (24399010206).

Almost surely, 2^138261057783 is an apocalyptic number.

138261057783 is a deficient number, since it is larger than the sum of its proper divisors (56931023865).

138261057783 is a wasteful number, since it uses less digits than its factorization.

138261057783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711001153.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 138261057783 in words is "one hundred thirty-eight billion, two hundred sixty-one million, fifty-seven thousand, seven hundred eighty-three".