40131492709 has 24 divisors (see below), whose sum is σ = 51485785344. Its totient is φ = 30605916000.

The previous prime is 40131492683. The next prime is 40131492727. The reversal of 40131492709 is 90729413104.

40131492709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40131492709 - 2¹³ = 40131484517 is a prime.

It is a super-2 number, since 2×40131492709² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131492769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 464242 + ... + 543859.

It is an arithmetic number, because the mean of its divisors is an integer number (2145241056).

Almost surely, 2^40131492709 is an apocalyptic number.

It is an amenable number.

40131492709 is a deficient number, since it is larger than the sum of its proper divisors (11354292635).

40131492709 is a wasteful number, since it uses less digits than its factorization.

40131492709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1008177 (or 1008166 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 40131492709 in words is "forty billion, one hundred thirty-one million, four hundred ninety-two thousand, seven hundred nine".