406199515801 has 2 divisors, whose sum is σ = 406199515802. Its totient is φ = 406199515800.

The previous prime is 406199515793. The next prime is 406199515823. The reversal of 406199515801 is 108515991604.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319219350025 + 86980165776 = 564995^2 + 294924^2 .

It is a cyclic number.

It is not a de Polignac number, because 406199515801 - 2³ = 406199515793 is a prime.

It is not a weakly prime, because it can be changed into another prime (406199515861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203099757900 + 203099757901.

It is an arithmetic number, because the mean of its divisors is an integer number (203099757901).

Almost surely, 2^406199515801 is an apocalyptic number.

It is an amenable number.

406199515801 is a deficient number, since it is larger than the sum of its proper divisors (1).

406199515801 is an equidigital number, since it uses as much as digits as its factorization.

406199515801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 406199515801 in words is "four hundred six billion, one hundred ninety-nine million, five hundred fifteen thousand, eight hundred one".