66461641146 has 24 divisors (see below), whose sum is σ = 146440906560. Its totient is φ = 21778390536.

The previous prime is 66461641139. The next prime is 66461641153. The reversal of 66461641146 is 64114616466.

66461641146 is a `hidden beast` number, since 6 + 6 + 461 + 6 + 41 + 146 = 666.

It is an interprime number because it is at equal distance from previous prime (66461641139) and next prime (66461641153).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31289730 + ... + 31291853.

It is an arithmetic number, because the mean of its divisors is an integer number (6101704440).

Almost surely, 2^66461641146 is an apocalyptic number.

66461641146 is an abundant number, since it is smaller than the sum of its proper divisors (79979265414).

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

66461641146 is a wasteful number, since it uses less digits than its factorization.

66461641146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62581650 (or 62581647 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The spelling of 66461641146 in words is "sixty-six billion, four hundred sixty-one million, six hundred forty-one thousand, one hundred forty-six".