400726202215601 has 8 divisors (see below), whose sum is σ = 409172729238504. Its totient is φ = 392312477240320.

The previous prime is 400726202215561. The next prime is 400726202215607. The reversal of 400726202215601 is 106512202627004.

It can be written as a sum of positive squares in 4 ways, for example, as 4143671431201 + 396582530784400 = 2035601^2 + 19914380^2 .

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 400726202215601 - 2⁴² = 396328155704497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400726202215607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8200487216 + ... + 8200536081.

It is an arithmetic number, because the mean of its divisors is an integer number (51146591154813).

Almost surely, 2^{400726202215601} is an apocalyptic number.

It is an amenable number.

400726202215601 is a deficient number, since it is larger than the sum of its proper divisors (8446527022903).

400726202215601 is a wasteful number, since it uses less digits than its factorization.

400726202215601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16401023811.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 400726202215601 in words is "four hundred trillion, seven hundred twenty-six billion, two hundred two million, two hundred fifteen thousand, six hundred one".