400401202617 has 64 divisors (see below), whose sum is σ = 642434661120. Its totient is φ = 245009318400.

The previous prime is 400401202603. The next prime is 400401202627. The reversal of 400401202617 is 716202104004.

400401202617 is a `hidden beast` number, since 4 + 0 + 0 + 40 + 1 + 2 + 0 + 2 + 617 = 666.

It is not a de Polignac number, because 400401202617 - 2²² = 400397008313 is a prime.

It is a super-2 number, since 2×400401202617² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (400401202627) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46119517 + ... + 46128197.

It is an arithmetic number, because the mean of its divisors is an integer number (10038041580).

Almost surely, 2^400401202617 is an apocalyptic number.

It is an amenable number.

400401202617 is a deficient number, since it is larger than the sum of its proper divisors (242033458503).

400401202617 is a wasteful number, since it uses less digits than its factorization.

400401202617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9431 (or 9425 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The spelling of 400401202617 in words is "four hundred billion, four hundred one million, two hundred two thousand, six hundred seventeen".