40450941721 has 4 divisors (see below), whose sum is σ = 40488996352. Its totient is φ = 40412887092.

The previous prime is 40450941709. The next prime is 40450941757. The reversal of 40450941721 is 12714905404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40450941721 - 2³⁵ = 6091203353 is a prime.

It is a super-2 number, since 2×40450941721² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40450941221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19025721 + ... + 19027846.

It is an arithmetic number, because the mean of its divisors is an integer number (10122249088).

Almost surely, 2^40450941721 is an apocalyptic number.

It is an amenable number.

40450941721 is a deficient number, since it is larger than the sum of its proper divisors (38054631).

40450941721 is a wasteful number, since it uses less digits than its factorization.

40450941721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38054630.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 40450941721 in words is "forty billion, four hundred fifty million, nine hundred forty-one thousand, seven hundred twenty-one".