66808516962 has 16 divisors (see below), whose sum is σ = 145764037152. Its totient is φ = 20245005120.

The previous prime is 66808516961. The next prime is 66808516969. The reversal of 66808516962 is 26961580866.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66808516961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506125063 + ... + 506125194.

It is an arithmetic number, because the mean of its divisors is an integer number (9110252322).

Almost surely, 2^66808516962 is an apocalyptic number.

66808516962 is an abundant number, since it is smaller than the sum of its proper divisors (78955520190).

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

66808516962 is a wasteful number, since it uses less digits than its factorization.

66808516962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012250273.

The product of its (nonzero) digits is 7464960, while the sum is 57.

The spelling of 66808516962 in words is "sixty-six billion, eight hundred eight million, five hundred sixteen thousand, nine hundred sixty-two".