41221567657 has 8 divisors (see below), whose sum is σ = 42675319296. Its totient is φ = 39791845152.

The previous prime is 41221567637. The next prime is 41221567669. The reversal of 41221567657 is 75676512214.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 41221567657 - 2³¹ = 39074084009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41221567627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6003793 + ... + 6010654.

It is an arithmetic number, because the mean of its divisors is an integer number (5334414912).

Almost surely, 2^41221567657 is an apocalyptic number.

41221567657 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

41221567657 is a deficient number, since it is larger than the sum of its proper divisors (1453751639).

41221567657 is a wasteful number, since it uses less digits than its factorization.

41221567657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12014567.

The product of its digits is 705600, while the sum is 46.

The spelling of 41221567657 in words is "forty-one billion, two hundred twenty-one million, five hundred sixty-seven thousand, six hundred fifty-seven".