138547246557 has 16 divisors (see below), whose sum is σ = 187916490432. Its totient is φ = 90773973120.

The previous prime is 138547246547. The next prime is 138547246573. The reversal of 138547246557 is 755642745831.

It is a happy number.

It is not a de Polignac number, because 138547246557 - 2²⁰ = 138546197981 is a prime.

It is a super-2 number, since 2×138547246557² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138547246497 and 138547246506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138547246547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101688 + ... + 536129.

It is an arithmetic number, because the mean of its divisors is an integer number (11744780652).

Almost surely, 2^138547246557 is an apocalyptic number.

It is an amenable number.

138547246557 is a deficient number, since it is larger than the sum of its proper divisors (49369243875).

138547246557 is a wasteful number, since it uses less digits than its factorization.

138547246557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639068.

The product of its digits is 28224000, while the sum is 57.

The spelling of 138547246557 in words is "one hundred thirty-eight billion, five hundred forty-seven million, two hundred forty-six thousand, five hundred fifty-seven".