405710398116 has 81 divisors (see below), whose sum is σ = 1045782848929. Its totient is φ = 132618918432.

The previous prime is 405710398109. The next prime is 405710398127. The reversal of 405710398116 is 611893017504.

The square root of 405710398116 is 636954.

It is a perfect power (a square), and thus also a powerful number.

405710398116 is a `hidden beast` number, since 40 + 571 + 0 + 39 + 8 + 1 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 292475456100 + 113234942016 = 540810^2 + 336504^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 202550371 + ... + 202552373.

Almost surely, 2^405710398116 is an apocalyptic number.

405710398116 is the 636954-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405710398116

405710398116 is an abundant number, since it is smaller than the sum of its proper divisors (640072450813).

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

405710398116 is an equidigital number, since it uses as much as digits as its factorization.

405710398116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122 (or 2061 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 405710398116 in words is "four hundred five billion, seven hundred ten million, three hundred ninety-eight thousand, one hundred sixteen".