40053065621 has 16 divisors (see below), whose sum is σ = 40966620480. Its totient is φ = 39147828480.

The previous prime is 40053065587. The next prime is 40053065623. The reversal of 40053065621 is 12656035004.

40053065621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40053065621 - 2⁶ = 40053065557 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 (40053065623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13083431 + ... + 13086491.

It is an arithmetic number, because the mean of its divisors is an integer number (2560413780).

Almost surely, 2^40053065621 is an apocalyptic number.

It is an amenable number.

40053065621 is a deficient number, since it is larger than the sum of its proper divisors (913554859).

40053065621 is a wasteful number, since it uses less digits than its factorization.

40053065621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 40053065621 in words is "forty billion, fifty-three million, sixty-five thousand, six hundred twenty-one".