40125759309 has 12 divisors (see below), whose sum is σ = 57961328256. Its totient is φ = 26749630152.

The previous prime is 40125759307. The next prime is 40125759343. The reversal of 40125759309 is 90395752104.

It is a happy number.

40125759309 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 57 + 593 + 0 + 9 = 666.

It is not a de Polignac number, because 40125759309 - 2¹ = 40125759307 is a prime.

It is a super-2 number, since 2×40125759309² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125759307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340122 + ... + 442644.

It is an arithmetic number, because the mean of its divisors is an integer number (4830110688).

Almost surely, 2^40125759309 is an apocalyptic number.

It is an amenable number.

40125759309 is a deficient number, since it is larger than the sum of its proper divisors (17835568947).

40125759309 is a wasteful number, since it uses less digits than its factorization.

40125759309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146016 (or 146013 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The spelling of 40125759309 in words is "forty billion, one hundred twenty-five million, seven hundred fifty-nine thousand, three hundred nine".