40456442521 has 8 divisors (see below), whose sum is σ = 44154057024. Its totient is φ = 36762120720.

The previous prime is 40456442473. The next prime is 40456442581. The reversal of 40456442521 is 12524465404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40456442521 - 2⁹ = 40456442009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40456442581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 797445 + ... + 846658.

It is an arithmetic number, because the mean of its divisors is an integer number (5519257128).

Almost surely, 2^40456442521 is an apocalyptic number.

It is an amenable number.

40456442521 is a deficient number, since it is larger than the sum of its proper divisors (3697614503).

40456442521 is a wasteful number, since it uses less digits than its factorization.

40456442521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646351.

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 40456442521 in words is "forty billion, four hundred fifty-six million, four hundred forty-two thousand, five hundred twenty-one".