16405878043 has 2 divisors, whose sum is σ = 16405878044. Its totient is φ = 16405878042.

The previous prime is 16405878031. The next prime is 16405878053. The reversal of 16405878043 is 34087850461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16405878043 - 2¹⁷ = 16405746971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16405877984 and 16405878002.

It is not a weakly prime, because it can be changed into another prime (16405878053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8202939021 + 8202939022.

It is an arithmetic number, because the mean of its divisors is an integer number (8202939022).

Almost surely, 2^16405878043 is an apocalyptic number.

16405878043 is a deficient number, since it is larger than the sum of its proper divisors (1).

16405878043 is an equidigital number, since it uses as much as digits as its factorization.

16405878043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 16405878043 in words is "sixteen billion, four hundred five million, eight hundred seventy-eight thousand, forty-three".