40021050017 has 8 divisors (see below), whose sum is σ = 43112695080. Its totient is φ = 36931276800.

The previous prime is 40021049993. The next prime is 40021050029. The reversal of 40021050017 is 71005012004.

It can be written as a sum of positive squares in 4 ways, for example, as 4648336 + 40016401681 = 2156^2 + 200041^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40021050017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40021050917) 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, 423392 + ... + 509217.

It is an arithmetic number, because the mean of its divisors is an integer number (5389086885).

Almost surely, 2^40021050017 is an apocalyptic number.

It is an amenable number.

40021050017 is a deficient number, since it is larger than the sum of its proper divisors (3091645063).

40021050017 is a wasteful number, since it uses less digits than its factorization.

40021050017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935923.

The product of its (nonzero) digits is 280, while the sum is 20.

The spelling of 40021050017 in words is "forty billion, twenty-one million, fifty thousand, seventeen".