66767428292 has 12 divisors (see below), whose sum is σ = 116936557500. Its totient is φ = 33356983296.

The previous prime is 66767428283. The next prime is 66767428297. The reversal of 66767428292 is 29282476766.

It is a happy number.

66767428292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14021875396 + 52745552896 = 118414^2 + 229664^2 .

It is not an unprimeable number, because it can be changed into a prime (66767428297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6677093 + ... + 6687084.

It is an arithmetic number, because the mean of its divisors is an integer number (9744713125).

Almost surely, 2^66767428292 is an apocalyptic number.

It is an amenable number.

66767428292 is a deficient number, since it is larger than the sum of its proper divisors (50169129208).

66767428292 is a wasteful number, since it uses less digits than its factorization.

66767428292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13365430 (or 13365428 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 59.

The spelling of 66767428292 in words is "sixty-six billion, seven hundred sixty-seven million, four hundred twenty-eight thousand, two hundred ninety-two".