66146717652 has 24 divisors (see below), whose sum is σ = 154350818496. Its totient is φ = 22047694848.

The previous prime is 66146717641. The next prime is 66146717653. The reversal of 66146717652 is 25671764166.

It is a super-2 number, since 2×66146717652² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66146717595 and 66146717604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66146717653) 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, 91833 + ... + 375135.

It is an arithmetic number, because the mean of its divisors is an integer number (6431284104).

Almost surely, 2^66146717652 is an apocalyptic number.

It is an amenable number.

66146717652 is an abundant number, since it is smaller than the sum of its proper divisors (88204100844).

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

66146717652 is a wasteful number, since it uses less digits than its factorization.

66146717652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302767 (or 302765 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 51.

The spelling of 66146717652 in words is "sixty-six billion, one hundred forty-six million, seven hundred seventeen thousand, six hundred fifty-two".