85566076712461 has 4 divisors (see below), whose sum is σ = 86738214749692. Its totient is φ = 84393938675232.

The previous prime is 85566076712449. The next prime is 85566076712483. The reversal of 85566076712461 is 16421767066558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33195815619561 + 52370261092900 = 5761581^2 + 7236730^2 .

It is a cyclic number.

It is not a de Polignac number, because 85566076712461 - 2¹⁷ = 85566076581389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85566076712393 and 85566076712402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85566086712461) 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, 586069018506 + ... + 586069018651.

It is an arithmetic number, because the mean of its divisors is an integer number (21684553687423).

Almost surely, 2^{85566076712461} is an apocalyptic number.

It is an amenable number.

85566076712461 is a deficient number, since it is larger than the sum of its proper divisors (1172138037231).

85566076712461 is a wasteful number, since it uses less digits than its factorization.

85566076712461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172138037230.

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 85566076712461 in words is "eighty-five trillion, five hundred sixty-six billion, seventy-six million, seven hundred twelve thousand, four hundred sixty-one".