66570455106 has 24 divisors (see below), whose sum is σ = 144512850924. Its totient is φ = 22147557120.

The previous prime is 66570455101. The next prime is 66570455113. The reversal of 66570455106 is 60155407566.

66570455106 is a `hidden beast` number, since 6 + 65 + 70 + 4 + 5 + 510 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61930801881 + 4639653225 = 248859^2 + 68115^2 .

It is a super-2 number, since 2×66570455106² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66570455101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3539911 + ... + 3558666.

Almost surely, 2^66570455106 is an apocalyptic number.

66570455106 is an abundant number, since it is smaller than the sum of its proper divisors (77942395818).

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

66570455106 is a wasteful number, since it uses less digits than its factorization.

66570455106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7099106 (or 7099103 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 66570455106 in words is "sixty-six billion, five hundred seventy million, four hundred fifty-five thousand, one hundred six".