66758008340 has 48 divisors (see below), whose sum is σ = 146066747904. Its totient is φ = 25600272000.

The previous prime is 66758008337. The next prime is 66758008357. The reversal of 66758008340 is 4380085766.

66758008340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436811 + ... + 569490.

It is an arithmetic number, because the mean of its divisors is an integer number (3043057248).

Almost surely, 2^66758008340 is an apocalyptic number.

It is an amenable number.

66758008340 is an abundant number, since it is smaller than the sum of its proper divisors (79308739564).

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

66758008340 is a wasteful number, since it uses less digits than its factorization.

66758008340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006448 (or 1006446 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 66758008340 in words is "sixty-six billion, seven hundred fifty-eight million, eight thousand, three hundred forty".