1613931404851 has 2 divisors, whose sum is σ = 1613931404852. Its totient is φ = 1613931404850.

The previous prime is 1613931404819. The next prime is 1613931404947. The reversal of 1613931404851 is 1584041393161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1613931404851 - 2⁵ = 1613931404819 is a prime.

It is not a weakly prime, because it can be changed into another prime (1613931404801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806965702425 + 806965702426.

It is an arithmetic number, because the mean of its divisors is an integer number (806965702426).

Almost surely, 2^{1613931404851} is an apocalyptic number.

1613931404851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1613931404851 is an equidigital number, since it uses as much as digits as its factorization.

1613931404851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 1613931404851 in words is "one trillion, six hundred thirteen billion, nine hundred thirty-one million, four hundred four thousand, eight hundred fifty-one".