40401768683 has 2 divisors, whose sum is σ = 40401768684. Its totient is φ = 40401768682.

The previous prime is 40401768599. The next prime is 40401768689. The reversal of 40401768683 is 38686710404.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40401768683 - 2¹² = 40401764587 is a prime.

It is not a weakly prime, because it can be changed into another prime (40401768689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20200884341 + 20200884342.

It is an arithmetic number, because the mean of its divisors is an integer number (20200884342).

Almost surely, 2^40401768683 is an apocalyptic number.

40401768683 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401768683 is an equidigital number, since it uses as much as digits as its factorization.

40401768683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The spelling of 40401768683 in words is "forty billion, four hundred one million, seven hundred sixty-eight thousand, six hundred eighty-three".