66225566410 has 16 divisors (see below), whose sum is σ = 119995466112. Its totient is φ = 26314794000.

The previous prime is 66225566387. The next prime is 66225566441. The reversal of 66225566410 is 1466552266.

It is a happy 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, 21927486 + ... + 21930505.

It is an arithmetic number, because the mean of its divisors is an integer number (7499716632).

Almost surely, 2^66225566410 is an apocalyptic number.

66225566410 is a deficient number, since it is larger than the sum of its proper divisors (53769899702).

66225566410 is a wasteful number, since it uses less digits than its factorization.

66225566410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43858149.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 66225566410 in words is "sixty-six billion, two hundred twenty-five million, five hundred sixty-six thousand, four hundred ten".