41562891221 has 4 divisors (see below), whose sum is σ = 43369973472. Its totient is φ = 39755808972.

The previous prime is 41562891127. The next prime is 41562891233. The reversal of 41562891221 is 12219826514.

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 41562891221 - 2¹⁰ = 41562890197 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 (41562891121) 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, 903541091 + ... + 903541136.

It is an arithmetic number, because the mean of its divisors is an integer number (10842493368).

Almost surely, 2^41562891221 is an apocalyptic number.

It is an amenable number.

41562891221 is a deficient number, since it is larger than the sum of its proper divisors (1807082251).

41562891221 is a wasteful number, since it uses less digits than its factorization.

41562891221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807082250.

The product of its digits is 69120, while the sum is 41.

The spelling of 41562891221 in words is "forty-one billion, five hundred sixty-two million, eight hundred ninety-one thousand, two hundred twenty-one".