40042806480851 has 2 divisors, whose sum is σ = 40042806480852. Its totient is φ = 40042806480850.

The previous prime is 40042806480751. The next prime is 40042806480857. The reversal of 40042806480851 is 15808460824004.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40042806480851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40042806480851.

It is not a weakly prime, because it can be changed into another prime (40042806480857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021403240425 + 20021403240426.

It is an arithmetic number, because the mean of its divisors is an integer number (20021403240426).

Almost surely, 2^{40042806480851} is an apocalyptic number.

40042806480851 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042806480851 is an equidigital number, since it uses as much as digits as its factorization.

40042806480851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1966080, while the sum is 50.

The spelling of 40042806480851 in words is "forty trillion, forty-two billion, eight hundred six million, four hundred eighty thousand, eight hundred fifty-one".