40376391401791 has 2 divisors, whose sum is σ = 40376391401792. Its totient is φ = 40376391401790.

The previous prime is 40376391401699. The next prime is 40376391401821. The reversal of 40376391401791 is 19710419367304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40376391401791 - 2⁷ = 40376391401663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40376391801791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20188195700895 + 20188195700896.

It is an arithmetic number, because the mean of its divisors is an integer number (20188195700896).

Almost surely, 2^{40376391401791} is an apocalyptic number.

40376391401791 is a deficient number, since it is larger than the sum of its proper divisors (1).

40376391401791 is an equidigital number, since it uses as much as digits as its factorization.

40376391401791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 40376391401791 in words is "forty trillion, three hundred seventy-six billion, three hundred ninety-one million, four hundred one thousand, seven hundred ninety-one".