66886284530 has 32 divisors (see below), whose sum is σ = 130482367344. Its totient is φ = 24539164416.

The previous prime is 66886284481. The next prime is 66886284533. The reversal of 66886284530 is 3548268866.

It can be written as a sum of positive squares in 8 ways, for example, as 28385173441 + 38501111089 = 168479^2 + 196217^2 .

It is not an unprimeable number, because it can be changed into a prime (66886284533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1618157 + ... + 1658976.

Almost surely, 2^66886284530 is an apocalyptic number.

66886284530 is a deficient number, since it is larger than the sum of its proper divisors (63596082814).

66886284530 is a wasteful number, since it uses less digits than its factorization.

66886284530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277310.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 66886284530 in words is "sixty-six billion, eight hundred eighty-six million, two hundred eighty-four thousand, five hundred thirty".