400535406601 has 8 divisors (see below), whose sum is σ = 437240398464. Its totient is φ = 363879195120.

The previous prime is 400535406589. The next prime is 400535406617. The reversal of 400535406601 is 106604535004.

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 400535406601 - 2¹³ = 400535398409 is a prime.

It is a super-2 number, since 2×400535406601² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400535406671) 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, 12177921 + ... + 12210766.

It is an arithmetic number, because the mean of its divisors is an integer number (54655049808).

Almost surely, 2^400535406601 is an apocalyptic number.

It is an amenable number.

400535406601 is a deficient number, since it is larger than the sum of its proper divisors (36704991863).

400535406601 is a wasteful number, since it uses less digits than its factorization.

400535406601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24390191.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 400535406601 in words is "four hundred billion, five hundred thirty-five million, four hundred six thousand, six hundred one".