40874918221 has 4 divisors (see below), whose sum is σ = 40903167712. Its totient is φ = 40846668732.

The previous prime is 40874918197. The next prime is 40874918237. The reversal of 40874918221 is 12281947804.

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 40874918221 - 2⁷ = 40874918093 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 (40874918921) 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, 14122575 + ... + 14125468.

It is an arithmetic number, because the mean of its divisors is an integer number (10225791928).

Almost surely, 2^40874918221 is an apocalyptic number.

It is an amenable number.

40874918221 is a deficient number, since it is larger than the sum of its proper divisors (28249491).

40874918221 is a wasteful number, since it uses less digits than its factorization.

40874918221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28249490.

The product of its (nonzero) digits is 258048, while the sum is 46.

The spelling of 40874918221 in words is "forty billion, eight hundred seventy-four million, nine hundred eighteen thousand, two hundred twenty-one".