40405728563 has 16 divisors (see below), whose sum is σ = 41684584800. Its totient is φ = 39147494400.

The previous prime is 40405728553. The next prime is 40405728589. The reversal of 40405728563 is 36582750404.

It is a cyclic number.

It is not a de Polignac number, because 40405728563 - 2²⁴ = 40388951347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40405728553) 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, 7754303 + ... + 7759511.

It is an arithmetic number, because the mean of its divisors is an integer number (2605286550).

Almost surely, 2^40405728563 is an apocalyptic number.

40405728563 is a deficient number, since it is larger than the sum of its proper divisors (1278856237).

40405728563 is a wasteful number, since it uses less digits than its factorization.

40405728563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 40405728563 in words is "forty billion, four hundred five million, seven hundred twenty-eight thousand, five hundred sixty-three".