66733407340 has 24 divisors (see below), whose sum is σ = 140303715552. Its totient is φ = 26662208640.

The previous prime is 66733407283. The next prime is 66733407371. The reversal of 66733407340 is 4370433766.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1929576 + ... + 1963855.

It is an arithmetic number, because the mean of its divisors is an integer number (5845988148).

Almost surely, 2^66733407340 is an apocalyptic number.

It is an amenable number.

66733407340 is an abundant number, since it is smaller than the sum of its proper divisors (73570308212).

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

66733407340 is a wasteful number, since it uses less digits than its factorization.

66733407340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894297 (or 3894295 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 43.

The spelling of 66733407340 in words is "sixty-six billion, seven hundred thirty-three million, four hundred seven thousand, three hundred forty".