66616100510 has 16 divisors (see below), whose sum is σ = 119920368672. Its totient is φ = 26643909600.

The previous prime is 66616100501. The next prime is 66616100549. The reversal of 66616100510 is 1500161666.

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, 203861 + ... + 418080.

It is an arithmetic number, because the mean of its divisors is an integer number (7495023042).

Almost surely, 2^66616100510 is an apocalyptic number.

66616100510 is a deficient number, since it is larger than the sum of its proper divisors (53304268162).

66616100510 is a wasteful number, since it uses less digits than its factorization.

66616100510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632659.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 66616100510 in words is "sixty-six billion, six hundred sixteen million, one hundred thousand, five hundred ten".