40521688735 has 16 divisors (see below), whose sum is σ = 53051241600. Its totient is φ = 29467726240.

The previous prime is 40521688717. The next prime is 40521688763. The reversal of 40521688735 is 53788612504.

It is a happy number.

It is not a de Polignac number, because 40521688735 - 2⁵ = 40521688703 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783384 + ... + 833506.

It is an arithmetic number, because the mean of its divisors is an integer number (3315702600).

Almost surely, 2^40521688735 is an apocalyptic number.

40521688735 is a deficient number, since it is larger than the sum of its proper divisors (12529552865).

40521688735 is a wasteful number, since it uses less digits than its factorization.

40521688735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64838.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 40521688735 in words is "forty billion, five hundred twenty-one million, six hundred eighty-eight thousand, seven hundred thirty-five".