66769749336 has 16 divisors (see below), whose sum is σ = 166924373400. Its totient is φ = 22256583104.

The previous prime is 66769749329. The next prime is 66769749337. The reversal of 66769749336 is 63394796766.

66769749336 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×66769749336³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66769749337) 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, 1391036421 + ... + 1391036468.

Almost surely, 2^66769749336 is an apocalyptic number.

It is an amenable number.

66769749336 is an abundant number, since it is smaller than the sum of its proper divisors (100154624064).

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

66769749336 is a wasteful number, since it uses less digits than its factorization.

66769749336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782072898 (or 2782072894 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 66.

The spelling of 66769749336 in words is "sixty-six billion, seven hundred sixty-nine million, seven hundred forty-nine thousand, three hundred thirty-six".