406857220083 has 20 divisors (see below), whose sum is σ = 607794175560. Its totient is φ = 271229306112.

The previous prime is 406857220079. The next prime is 406857220109. The reversal of 406857220083 is 380022758604.

406857220083 is a `hidden beast` number, since 406 + 85 + 72 + 20 + 0 + 83 = 666.

It is not a de Polignac number, because 406857220083 - 2² = 406857220079 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406857221083) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3251248 + ... + 3374066.

It is an arithmetic number, because the mean of its divisors is an integer number (30389708778).

Almost surely, 2^406857220083 is an apocalyptic number.

406857220083 is a deficient number, since it is larger than the sum of its proper divisors (200936955477).

406857220083 is a wasteful number, since it uses less digits than its factorization.

406857220083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163728 (or 163719 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

Adding to 406857220083 its reverse (380022758604), we get a palindrome (786879978687).

The spelling of 406857220083 in words is "four hundred six billion, eight hundred fifty-seven million, two hundred twenty thousand, eighty-three".