400865695465 has 8 divisors (see below), whose sum is σ = 481048154568. Its totient is φ = 320686343040.

The previous prime is 400865695387. The next prime is 400865695471. The reversal of 400865695465 is 564596568004.

It can be written as a sum of positive squares in 4 ways, for example, as 50098525929 + 350767169536 = 223827^2 + 592256^2 .

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

It is not a de Polignac number, because 400865695465 - 2⁷ = 400865695337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482676 + ... + 1017205.

It is an arithmetic number, because the mean of its divisors is an integer number (60131019321).

Almost surely, 2^400865695465 is an apocalyptic number.

It is an amenable number.

400865695465 is a deficient number, since it is larger than the sum of its proper divisors (80182459103).

400865695465 is a wasteful number, since it uses less digits than its factorization.

400865695465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553339.

The product of its (nonzero) digits is 31104000, while the sum is 58.

The spelling of 400865695465 in words is "four hundred billion, eight hundred sixty-five million, six hundred ninety-five thousand, four hundred sixty-five".