41166977921 has 4 divisors (see below), whose sum is σ = 41202745344. Its totient is φ = 41131210500.

The previous prime is 41166977903. The next prime is 41166977923. The reversal of 41166977921 is 12977966114.

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 41166977921 - 2³⁰ = 40093236097 is a prime.

It is a super-2 number, since 2×41166977921² (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 (41166977923) 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, 17881985 + ... + 17884286.

It is an arithmetic number, because the mean of its divisors is an integer number (10300686336).

Almost surely, 2^41166977921 is an apocalyptic number.

It is an amenable number.

41166977921 is a deficient number, since it is larger than the sum of its proper divisors (35767423).

41166977921 is a wasteful number, since it uses less digits than its factorization.

41166977921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35767422.

The product of its digits is 1143072, while the sum is 53.

The spelling of 41166977921 in words is "forty-one billion, one hundred sixty-six million, nine hundred seventy-seven thousand, nine hundred twenty-one".