66710552850 has 36 divisors (see below), whose sum is σ = 179229019866. Its totient is φ = 17789480640.

The previous prime is 66710552807. The next prime is 66710552893. The reversal of 66710552850 is 5825501766.

66710552850 is a `hidden beast` number, since 6 + 6 + 7 + 10 + 552 + 85 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (66710552807) and next prime (66710552893).

It can be written as a sum of positive squares in 3 ways, for example, as 59925571209 + 6784981641 = 244797^2 + 82371^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 66710552796 and 66710552805.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 74122387 + ... + 74123286.

Almost surely, 2^66710552850 is an apocalyptic number.

66710552850 is an abundant number, since it is smaller than the sum of its proper divisors (112518467016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66710552850 is a wasteful number, since it uses less digits than its factorization.

66710552850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148245691 (or 148245683 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 66710552850 in words is "sixty-six billion, seven hundred ten million, five hundred fifty-two thousand, eight hundred fifty".