66918348152 has 64 divisors (see below), whose sum is σ = 130674297600. Its totient is φ = 32091909120.

The previous prime is 66918348151. The next prime is 66918348209. The reversal of 66918348152 is 25184381966.

It is a junction number, because it is equal to n+sod(n) for n = 66918348094 and 66918348103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66918348151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28980374 + ... + 28982682.

It is an arithmetic number, because the mean of its divisors is an integer number (2041785900).

Almost surely, 2^66918348152 is an apocalyptic number.

66918348152 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

66918348152 is a deficient number, since it is larger than the sum of its proper divisors (63755949448).

66918348152 is a wasteful number, since it uses less digits than its factorization.

66918348152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336 (or 3332 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The spelling of 66918348152 in words is "sixty-six billion, nine hundred eighteen million, three hundred forty-eight thousand, one hundred fifty-two".