66772630242 has 48 divisors (see below), whose sum is σ = 146981835000. Its totient is φ = 21905240832.

The previous prime is 66772630237. The next prime is 66772630247. The reversal of 66772630242 is 24203627766.

66772630242 is a `hidden beast` number, since 6 + 6 + 7 + 7 + 2 + 630 + 2 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (66772630237) and next prime (66772630247).

It can be written as a sum of positive squares in 4 ways, for example, as 61871090121 + 4901540121 = 248739^2 + 70011^2 .

It is not an unprimeable number, because it can be changed into a prime (66772630247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178134 + ... + 406542.

Almost surely, 2^66772630242 is an apocalyptic number.

66772630242 is an abundant number, since it is smaller than the sum of its proper divisors (80209204758).

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

66772630242 is a wasteful number, since it uses less digits than its factorization.

66772630242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228675 (or 228672 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 66772630242 in words is "sixty-six billion, seven hundred seventy-two million, six hundred thirty thousand, two hundred forty-two".