138783723265 has 8 divisors (see below), whose sum is σ = 181680510528. Its totient is φ = 100933616880.

The previous prime is 138783723251. The next prime is 138783723311. The reversal of 138783723265 is 562327387831.

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

It is not a de Polignac number, because 138783723265 - 2¹¹ = 138783721217 is a prime.

It is a super-2 number, since 2×138783723265² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 2523340423 = 138783723265 / (1 + 3 + 8 + 7 + 8 + 3 + 7 + 2 + 3 + 2 + 6 + 5).

It is an unprimeable number.

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, 1261670157 + ... + 1261670266.

It is an arithmetic number, because the mean of its divisors is an integer number (22710063816).

Almost surely, 2^138783723265 is an apocalyptic number.

It is an amenable number.

138783723265 is a deficient number, since it is larger than the sum of its proper divisors (42896787263).

138783723265 is a wasteful number, since it uses less digits than its factorization.

138783723265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523340439.

The product of its digits is 10160640, while the sum is 55.

The spelling of 138783723265 in words is "one hundred thirty-eight billion, seven hundred eighty-three million, seven hundred twenty-three thousand, two hundred sixty-five".