400774760065 has 8 divisors (see below), whose sum is σ = 483370980840. Its totient is φ = 318992295552.

The previous prime is 400774760063. The next prime is 400774760083. The reversal of 400774760065 is 560067477004.

It can be written as a sum of positive squares in 4 ways, for example, as 121881981456 + 278892778609 = 349116^2 + 528103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400774760065 - 2¹ = 400774760063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400774759997 and 400774760024.

It is not an unprimeable number, because it can be changed into a prime (400774760063) 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, 203437980 + ... + 203439949.

It is an arithmetic number, because the mean of its divisors is an integer number (60421372605).

Almost surely, 2^400774760065 is an apocalyptic number.

It is an amenable number.

400774760065 is a deficient number, since it is larger than the sum of its proper divisors (82596220775).

400774760065 is a wasteful number, since it uses less digits than its factorization.

400774760065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406878131.

The product of its (nonzero) digits is 987840, while the sum is 46.

The spelling of 400774760065 in words is "four hundred billion, seven hundred seventy-four million, seven hundred sixty thousand, sixty-five".