400406822465 has 32 divisors (see below), whose sum is σ = 529091619840. Its totient is φ = 289047089664.

The previous prime is 400406822443. The next prime is 400406822507. The reversal of 400406822465 is 564228604004.

It is a cyclic number.

It is not a de Polignac number, because 400406822465 - 2¹⁶ = 400406756929 is a prime.

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, 2485037 + ... + 2641253.

It is an arithmetic number, because the mean of its divisors is an integer number (16534113120).

Almost surely, 2^400406822465 is an apocalyptic number.

It is an amenable number.

400406822465 is a deficient number, since it is larger than the sum of its proper divisors (128684797375).

400406822465 is a wasteful number, since it uses less digits than its factorization.

400406822465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157121.

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 400406822465 in words is "four hundred billion, four hundred six million, eight hundred twenty-two thousand, four hundred sixty-five".