52166472961 has 4 divisors (see below), whose sum is σ = 52166933424. Its totient is φ = 52166012500.

The previous prime is 52166472947. The next prime is 52166472991. The reversal of 52166472961 is 16927466125.

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, and also a brilliant number, because the two primes have the same length.

It is a 5-Lehmer number, since φ(52166472961) divides (52166472961-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 52166472961 - 2¹⁷ = 52166341889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52166472991) 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, 71646 + ... + 330856.

It is an arithmetic number, because the mean of its divisors is an integer number (13041733356).

Almost surely, 2^52166472961 is an apocalyptic number.

52166472961 is the 102144-th centered decagonal number.

It is an amenable number.

52166472961 is a deficient number, since it is larger than the sum of its proper divisors (460463).

52166472961 is a wasteful number, since it uses less digits than its factorization.

52166472961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460462.

The product of its digits is 1088640, while the sum is 49.

The spelling of 52166472961 in words is "fifty-two billion, one hundred sixty-six million, four hundred seventy-two thousand, nine hundred sixty-one".