3940138767573 has 6 divisors (see below), whose sum is σ = 5691311553174. Its totient is φ = 2626759178376.

The previous prime is 3940138767529. The next prime is 3940138767589. The reversal of 3940138767573 is 3757678310493.

It is a happy number.

3940138767573 is a `hidden beast` number, since 3 + 9 + 40 + 13 + 8 + 7 + 6 + 7 + 573 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3759961439844 + 180177327729 = 1939062^2 + 424473^2 .

It is not a de Polignac number, because 3940138767573 - 2¹⁶ = 3940138702037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3940138767573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3940138765573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218896598190 + ... + 218896598207.

It is an arithmetic number, because the mean of its divisors is an integer number (948551925529).

Almost surely, 2^{3940138767573} is an apocalyptic number.

It is an amenable number.

3940138767573 is a deficient number, since it is larger than the sum of its proper divisors (1751172785601).

3940138767573 is a wasteful number, since it uses less digits than its factorization.

3940138767573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437793196403 (or 437793196400 counting only the distinct ones).

The product of its (nonzero) digits is 80015040, while the sum is 63.

The spelling of 3940138767573 in words is "three trillion, nine hundred forty billion, one hundred thirty-eight million, seven hundred sixty-seven thousand, five hundred seventy-three".