138534737569 has 16 divisors (see below), whose sum is σ = 144485301312. Its totient is φ = 132710131008.

The previous prime is 138534737501. The next prime is 138534737591. The reversal of 138534737569 is 965737435831.

It is not a de Polignac number, because 138534737569 - 2⁹ = 138534737057 is a prime.

It is a super-2 number, since 2×138534737569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138534737269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7016299 + ... + 7036015.

It is an arithmetic number, because the mean of its divisors is an integer number (9030331332).

Almost surely, 2^138534737569 is an apocalyptic number.

It is an amenable number.

138534737569 is a deficient number, since it is larger than the sum of its proper divisors (5950563743).

138534737569 is a wasteful number, since it uses less digits than its factorization.

138534737569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22896.

The product of its digits is 57153600, while the sum is 61.

The spelling of 138534737569 in words is "one hundred thirty-eight billion, five hundred thirty-four million, seven hundred thirty-seven thousand, five hundred sixty-nine".