66212750752 has 24 divisors (see below), whose sum is σ = 132815910276. Its totient is φ = 32481725952.

The previous prime is 66212750749. The next prime is 66212750753. The reversal of 66212750752 is 25705721266.

66212750752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59768514576 + 6444236176 = 244476^2 + 80276^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66212750699 and 66212750708.

It is not an unprimeable number, because it can be changed into a prime (66212750753) 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, 19518573 + ... + 19521964.

Almost surely, 2^66212750752 is an apocalyptic number.

It is an amenable number.

66212750752 is an abundant number, since it is smaller than the sum of its proper divisors (66603159524).

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

66212750752 is a wasteful number, since it uses less digits than its factorization.

66212750752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39040600 (or 39040592 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 66212750752 in words is "sixty-six billion, two hundred twelve million, seven hundred fifty thousand, seven hundred fifty-two".