66571103292 has 24 divisors (see below), whose sum is σ = 155341748352. Its totient is φ = 22189057200.

The previous prime is 66571103281. The next prime is 66571103317. The reversal of 66571103292 is 29230117566.

It is a congruent number.

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, 60067 + ... + 369797.

It is an arithmetic number, because the mean of its divisors is an integer number (6472572848).

Almost surely, 2^66571103292 is an apocalyptic number.

It is an amenable number.

66571103292 is an abundant number, since it is smaller than the sum of its proper divisors (88770645060).

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

66571103292 is a wasteful number, since it uses less digits than its factorization.

66571103292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327649 (or 327647 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 66571103292 in words is "sixty-six billion, five hundred seventy-one million, one hundred three thousand, two hundred ninety-two".