66043511962 has 4 divisors (see below), whose sum is σ = 99065267946. Its totient is φ = 33021755980.

The previous prime is 66043511951. The next prime is 66043511983. The reversal of 66043511962 is 26911534066.

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., 64876674681 + 1166837281 = 254709^2 + 34159^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16510877989 + ... + 16510877992.

Almost surely, 2^66043511962 is an apocalyptic number.

66043511962 is a deficient number, since it is larger than the sum of its proper divisors (33021755984).

66043511962 is a wasteful number, since it uses less digits than its factorization.

66043511962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33021755983.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 66043511962 in words is "sixty-six billion, forty-three million, five hundred eleven thousand, nine hundred sixty-two".