400705374657 has 8 divisors (see below), whose sum is σ = 610598666176. Its totient is φ = 228974499792.

The previous prime is 400705374617. The next prime is 400705374673. The reversal of 400705374657 is 756473507004.

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

It is not a de Polignac number, because 400705374657 - 2⁷ = 400705374529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400705374617) 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, 9540604138 + ... + 9540604179.

It is an arithmetic number, because the mean of its divisors is an integer number (76324833272).

Almost surely, 2^400705374657 is an apocalyptic number.

It is an amenable number.

400705374657 is a deficient number, since it is larger than the sum of its proper divisors (209893291519).

400705374657 is a wasteful number, since it uses less digits than its factorization.

400705374657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19081208327.

The product of its (nonzero) digits is 2469600, while the sum is 48.

The spelling of 400705374657 in words is "four hundred billion, seven hundred five million, three hundred seventy-four thousand, six hundred fifty-seven".