40400040037 has 6 divisors (see below), whose sum is σ = 46995964998. Its totient is φ = 34628605704.

The previous prime is 40400040029. The next prime is 40400040047. The reversal of 40400040037 is 73004000404.

It can be written as a sum of positive squares in only one way, i.e., 40186617156 + 213422881 = 200466^2 + 14609^2 .

It is not a de Polignac number, because 40400040037 - 2³ = 40400040029 is a prime.

It is a super-2 number, since 2×40400040037² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400040047) 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, 412245258 + ... + 412245355.

It is an arithmetic number, because the mean of its divisors is an integer number (7832660833).

Almost surely, 2^40400040037 is an apocalyptic number.

It is an amenable number.

40400040037 is a deficient number, since it is larger than the sum of its proper divisors (6595924961).

40400040037 is an equidigital number, since it uses as much as digits as its factorization.

40400040037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824490627 (or 824490620 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The spelling of 40400040037 in words is "forty billion, four hundred million, forty thousand, thirty-seven".