66325466428 has 48 divisors (see below), whose sum is σ = 125875723680. Its totient is φ = 30397296384.

The previous prime is 66325466407. The next prime is 66325466461. The reversal of 66325466428 is 82466452366.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 7041450 + ... + 7050862.

It is an arithmetic number, because the mean of its divisors is an integer number (2622410910).

Almost surely, 2^66325466428 is an apocalyptic number.

It is an amenable number.

66325466428 is a deficient number, since it is larger than the sum of its proper divisors (59550257252).

66325466428 is a wasteful number, since it uses less digits than its factorization.

66325466428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366 (or 10364 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 52.

The spelling of 66325466428 in words is "sixty-six billion, three hundred twenty-five million, four hundred sixty-six thousand, four hundred twenty-eight".