66186822802 has 16 divisors (see below), whose sum is σ = 100961888472. Its totient is φ = 32533441920.

The previous prime is 66186822797. The next prime is 66186822841. The reversal of 66186822802 is 20822868166.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37551075961 + 28635746841 = 193781^2 + 169221^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84478 + ... + 373510.

Almost surely, 2^66186822802 is an apocalyptic number.

66186822802 is a deficient number, since it is larger than the sum of its proper divisors (34775065670).

66186822802 is a wasteful number, since it uses less digits than its factorization.

66186822802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290973.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 66186822802 in words is "sixty-six billion, one hundred eighty-six million, eight hundred twenty-two thousand, eight hundred two".