40434013621 has 8 divisors (see below), whose sum is σ = 40542768000. Its totient is φ = 40325308320.

The previous prime is 40434013531. The next prime is 40434013649. The reversal of 40434013621 is 12631043404.

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 40434013621 - 2¹⁷ = 40433882549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40434013621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40434013021) 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, 2130030 + ... + 2148928.

It is an arithmetic number, because the mean of its divisors is an integer number (5067846000).

Almost surely, 2^40434013621 is an apocalyptic number.

It is an amenable number.

40434013621 is a deficient number, since it is larger than the sum of its proper divisors (108754379).

40434013621 is a wasteful number, since it uses less digits than its factorization.

40434013621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24539.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 40434013621 in words is "forty billion, four hundred thirty-four million, thirteen thousand, six hundred twenty-one".