40973312437 has 2 divisors, whose sum is σ = 40973312438. Its totient is φ = 40973312436.

The previous prime is 40973312423. The next prime is 40973312449. The reversal of 40973312437 is 73421337904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39309406756 + 1663905681 = 198266^2 + 40791^2 .

It is a cyclic number.

It is not a de Polignac number, because 40973312437 - 2¹⁹ = 40972788149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40973312393 and 40973312402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40973312407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20486656218 + 20486656219.

It is an arithmetic number, because the mean of its divisors is an integer number (20486656219).

Almost surely, 2^40973312437 is an apocalyptic number.

It is an amenable number.

40973312437 is a deficient number, since it is larger than the sum of its proper divisors (1).

40973312437 is an equidigital number, since it uses as much as digits as its factorization.

40973312437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 40973312437 in words is "forty billion, nine hundred seventy-three million, three hundred twelve thousand, four hundred thirty-seven".