8404756649851 has 2 divisors, whose sum is σ = 8404756649852. Its totient is φ = 8404756649850.

The previous prime is 8404756649713. The next prime is 8404756649911. The reversal of 8404756649851 is 1589466574048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8404756649851 - 2¹⁵ = 8404756617083 is a prime.

It is not a weakly prime, because it can be changed into another prime (8404756649651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4202378324925 + 4202378324926.

It is an arithmetic number, because the mean of its divisors is an integer number (4202378324926).

Almost surely, 2^{8404756649851} is an apocalyptic number.

8404756649851 is a deficient number, since it is larger than the sum of its proper divisors (1).

8404756649851 is an equidigital number, since it uses as much as digits as its factorization.

8404756649851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 232243200, while the sum is 67.

The spelling of 8404756649851 in words is "eight trillion, four hundred four billion, seven hundred fifty-six million, six hundred forty-nine thousand, eight hundred fifty-one".