866127142640762 has 4 divisors (see below), whose sum is σ = 1299190713961146. Its totient is φ = 433063571320380.

The previous prime is 866127142640743. The next prime is 866127142640779. The reversal of 866127142640762 is 267046241721668.

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

It can be written as a sum of positive squares in only one way, i.e., 562849480353601 + 303277662287161 = 23724449^2 + 17414869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 866127142640695 and 866127142640704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216531785660189 + ... + 216531785660192.

Almost surely, 2^{866127142640762} is an apocalyptic number.

866127142640762 is a deficient number, since it is larger than the sum of its proper divisors (433063571320384).

866127142640762 is a wasteful number, since it uses less digits than its factorization.

866127142640762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433063571320383.

The product of its (nonzero) digits is 65028096, while the sum is 62.

The spelling of 866127142640762 in words is "eight hundred sixty-six trillion, one hundred twenty-seven billion, one hundred forty-two million, six hundred forty thousand, seven hundred sixty-two".