40990524065 has 4 divisors (see below), whose sum is σ = 49188628884. Its totient is φ = 32792419248.

The previous prime is 40990524041. The next prime is 40990524079. The reversal of 40990524065 is 56042509904.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28864990609 + 12125533456 = 169897^2 + 110116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40990524065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4099052402 + ... + 4099052411.

It is an arithmetic number, because the mean of its divisors is an integer number (12297157221).

Almost surely, 2^40990524065 is an apocalyptic number.

It is an amenable number.

40990524065 is a deficient number, since it is larger than the sum of its proper divisors (8198104819).

40990524065 is an equidigital number, since it uses as much as digits as its factorization.

40990524065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8198104818.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 40990524065 in words is "forty billion, nine hundred ninety million, five hundred twenty-four thousand, sixty-five".