40520686479 has 32 divisors (see below), whose sum is σ = 68788446720. Its totient is φ = 20636525952.

The previous prime is 40520686477. The next prime is 40520686483. The reversal of 40520686479 is 97468602504.

It is not a de Polignac number, because 40520686479 - 2¹ = 40520686477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520686477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2551177 + ... + 2567010.

It is an arithmetic number, because the mean of its divisors is an integer number (2149638960).

Almost surely, 2^40520686479 is an apocalyptic number.

40520686479 is a deficient number, since it is larger than the sum of its proper divisors (28267760241).

40520686479 is a wasteful number, since it uses less digits than its factorization.

40520686479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118239.

The product of its (nonzero) digits is 2903040, while the sum is 51.

The spelling of 40520686479 in words is "forty billion, five hundred twenty million, six hundred eighty-six thousand, four hundred seventy-nine".