406257615066 has 16 divisors (see below), whose sum is σ = 812525731488. Its totient is φ = 135417454800.

The previous prime is 406257615053. The next prime is 406257615097. The reversal of 406257615066 is 660516752604.

It is a super-2 number, since 2×406257615066² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120021 + ... + 909351.

It is an arithmetic number, because the mean of its divisors is an integer number (50782858218).

Almost surely, 2^406257615066 is an apocalyptic number.

406257615066 is an abundant number, since it is smaller than the sum of its proper divisors (406268116422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406257615066 is a wasteful number, since it uses less digits than its factorization.

406257615066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875117.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 406257615066 in words is "four hundred six billion, two hundred fifty-seven million, six hundred fifteen thousand, sixty-six".