40521159797 has 16 divisors (see below), whose sum is σ = 42974052864. Its totient is φ = 38140632000.

The previous prime is 40521159739. The next prime is 40521159841. The reversal of 40521159797 is 79795112504.

It is a cyclic number.

It is not a de Polignac number, because 40521159797 - 2⁸ = 40521159541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40521159197) by changing a digit.

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, 4883222 + ... + 4891512.

It is an arithmetic number, because the mean of its divisors is an integer number (2685878304).

Almost surely, 2^40521159797 is an apocalyptic number.

It is an amenable number.

40521159797 is a deficient number, since it is larger than the sum of its proper divisors (2452893067).

40521159797 is a wasteful number, since it uses less digits than its factorization.

40521159797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12620.

The product of its (nonzero) digits is 793800, while the sum is 50.

The spelling of 40521159797 in words is "forty billion, five hundred twenty-one million, one hundred fifty-nine thousand, seven hundred ninety-seven".