41127656621 has 4 divisors (see below), whose sum is σ = 41534861244. Its totient is φ = 40720452000.

The previous prime is 41127656617. The next prime is 41127656677. The reversal of 41127656621 is 12665672114.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12665672114 = 2 ⋅6332836057.

It can be written as a sum of positive squares in 2 ways, for example, as 30385370596 + 10742286025 = 174314^2 + 103645^2 .

It is a cyclic number.

It is not a de Polignac number, because 41127656621 - 2² = 41127656617 is a prime.

It is a super-4 number, since 4×41127656621⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41127656021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203602160 + ... + 203602361.

It is an arithmetic number, because the mean of its divisors is an integer number (10383715311).

Almost surely, 2^41127656621 is an apocalyptic number.

It is an amenable number.

41127656621 is a deficient number, since it is larger than the sum of its proper divisors (407204623).

41127656621 is a wasteful number, since it uses less digits than its factorization.

41127656621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407204622.

The product of its digits is 120960, while the sum is 41.

The spelling of 41127656621 in words is "forty-one billion, one hundred twenty-seven million, six hundred fifty-six thousand, six hundred twenty-one".