406236523344 has 160 divisors (see below), whose sum is σ = 1082521380864. Its totient is φ = 131198538240.

The previous prime is 406236523337. The next prime is 406236523361. The reversal of 406236523344 is 443325632604.

It is a super-2 number, since 2×406236523344² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 406236523296 and 406236523305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227837877 + ... + 227839659.

Almost surely, 2^406236523344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406236523344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541260690432).

406236523344 is an abundant number, since it is smaller than the sum of its proper divisors (676284857520).

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

406236523344 is a wasteful number, since it uses less digits than its factorization.

406236523344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665 (or 2659 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 42.

The spelling of 406236523344 in words is "four hundred six billion, two hundred thirty-six million, five hundred twenty-three thousand, three hundred forty-four".