66055262771650 has 48 divisors (see below), whose sum is σ = 130091058353664. Its totient is φ = 24867663540480.

The previous prime is 66055262771623. The next prime is 66055262771711. The reversal of 66055262771650 is 5617726255066.

It is a happy number.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145210459 + ... + 145664641.

It is an arithmetic number, because the mean of its divisors is an integer number (2710230382368).

Almost surely, 2^{66055262771650} is an apocalyptic number.

66055262771650 is a deficient number, since it is larger than the sum of its proper divisors (64035795582014).

66055262771650 is a wasteful number, since it uses less digits than its factorization.

66055262771650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625315 (or 625310 counting only the distinct ones).

The product of its (nonzero) digits is 31752000, while the sum is 58.

The spelling of 66055262771650 in words is "sixty-six trillion, fifty-five billion, two hundred sixty-two million, seven hundred seventy-one thousand, six hundred fifty".