400166116245 has 48 divisors (see below), whose sum is σ = 818281331712. Its totient is φ = 177032010240.

The previous prime is 400166116211. The next prime is 400166116327. The reversal of 400166116245 is 542611661004.

400166116245 is a `hidden beast` number, since 4 + 0 + 0 + 16 + 6 + 11 + 624 + 5 = 666.

It is not a de Polignac number, because 400166116245 - 2¹⁰ = 400166115221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20480052 + ... + 20499581.

It is an arithmetic number, because the mean of its divisors is an integer number (17047527744).

Almost surely, 2^400166116245 is an apocalyptic number.

400166116245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

400166116245 is an abundant number, since it is smaller than the sum of its proper divisors (418115215467).

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

400166116245 is a wasteful number, since it uses less digits than its factorization.

400166116245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40979682 (or 40979679 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 400166116245 its reverse (542611661004), we get a palindrome (942777777249).

The spelling of 400166116245 in words is "four hundred billion, one hundred sixty-six million, one hundred sixteen thousand, two hundred forty-five".