40205402017 has 16 divisors (see below), whose sum is σ = 45610490880. Its totient is φ = 35105190400.

The previous prime is 40205401979. The next prime is 40205402071. The reversal of 40205402017 is 71020450204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40205402017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40205401982 and 40205402000.

It is not an unprimeable number, because it can be changed into a prime (40205412017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269008 + ... + 390865.

It is an arithmetic number, because the mean of its divisors is an integer number (2850655680).

Almost surely, 2^40205402017 is an apocalyptic number.

It is an amenable number.

40205402017 is a deficient number, since it is larger than the sum of its proper divisors (5405088863).

40205402017 is a wasteful number, since it uses less digits than its factorization.

40205402017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660104.

The product of its (nonzero) digits is 2240, while the sum is 25.

The spelling of 40205402017 in words is "forty billion, two hundred five million, four hundred two thousand, seventeen".