406068508520 has 32 divisors (see below), whose sum is σ = 913893477120. Its totient is φ = 162384855360.

The previous prime is 406068508427. The next prime is 406068508523. The reversal of 406068508520 is 25805860604.

It is a super-2 number, since 2×406068508520² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (406068508523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174796 + ... + 1480635.

It is an arithmetic number, because the mean of its divisors is an integer number (28559171160).

Almost surely, 2^406068508520 is an apocalyptic number.

406068508520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

406068508520 is an abundant number, since it is smaller than the sum of its proper divisors (507824968600).

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

406068508520 is a wasteful number, since it uses less digits than its factorization.

406068508520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659265 (or 2659261 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 406068508520 in words is "four hundred six billion, sixty-eight million, five hundred eight thousand, five hundred twenty".