40204252015 has 16 divisors (see below), whose sum is σ = 49439541888. Its totient is φ = 31369304736.

The previous prime is 40204252009. The next prime is 40204252031. The reversal of 40204252015 is 51025240204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40204252015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9952 + ... + 283738.

It is an arithmetic number, because the mean of its divisors is an integer number (3089971368).

Almost surely, 2^40204252015 is an apocalyptic number.

40204252015 is a deficient number, since it is larger than the sum of its proper divisors (9235289873).

40204252015 is a wasteful number, since it uses less digits than its factorization.

40204252015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274518.

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 40204252015 its reverse (51025240204), we get a palindrome (91229492219).

The spelling of 40204252015 in words is "forty billion, two hundred four million, two hundred fifty-two thousand, fifteen".