66900233402 has 4 divisors (see below), whose sum is σ = 100350350106. Its totient is φ = 33450116700.

The previous prime is 66900233401. The next prime is 66900233437. The reversal of 66900233402 is 20433200966.

66900233402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41062564321 + 25837669081 = 202639^2 + 160741^2 .

It is not an unprimeable number, because it can be changed into a prime (66900233401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16725058349 + ... + 16725058352.

Almost surely, 2^66900233402 is an apocalyptic number.

66900233402 is a deficient number, since it is larger than the sum of its proper divisors (33450116704).

66900233402 is a wasteful number, since it uses less digits than its factorization.

66900233402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33450116703.

The product of its (nonzero) digits is 46656, while the sum is 35.

The spelling of 66900233402 in words is "sixty-six billion, nine hundred million, two hundred thirty-three thousand, four hundred two".