40371975439 has 2 divisors, whose sum is σ = 40371975440. Its totient is φ = 40371975438.

The previous prime is 40371975433. The next prime is 40371975499. The reversal of 40371975439 is 93457917304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40371975439 - 2⁹ = 40371974927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40371975433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20185987719 + 20185987720.

It is an arithmetic number, because the mean of its divisors is an integer number (20185987720).

Almost surely, 2^40371975439 is an apocalyptic number.

40371975439 is a deficient number, since it is larger than the sum of its proper divisors (1).

40371975439 is an equidigital number, since it uses as much as digits as its factorization.

40371975439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 40371975439 in words is "forty billion, three hundred seventy-one million, nine hundred seventy-five thousand, four hundred thirty-nine".