40007073737 has 2 divisors, whose sum is σ = 40007073738. Its totient is φ = 40007073736.

The previous prime is 40007073649. The next prime is 40007073749. The reversal of 40007073737 is 73737070004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25669166656 + 14337907081 = 160216^2 + 119741^2 .

It is a cyclic number.

It is not a de Polignac number, because 40007073737 - 2²⁸ = 39738638281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40007073737.

It is not a weakly prime, because it can be changed into another prime (40007043737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003536868 + 20003536869.

It is an arithmetic number, because the mean of its divisors is an integer number (20003536869).

Almost surely, 2^40007073737 is an apocalyptic number.

It is an amenable number.

40007073737 is a deficient number, since it is larger than the sum of its proper divisors (1).

40007073737 is an equidigital number, since it uses as much as digits as its factorization.

40007073737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86436, while the sum is 38.

The spelling of 40007073737 in words is "forty billion, seven million, seventy-three thousand, seven hundred thirty-seven".