66354546810 has 64 divisors (see below), whose sum is σ = 163599098112. Its totient is φ = 17211672576.

The previous prime is 66354546763. The next prime is 66354546851. The reversal of 66354546810 is 1864545366.

It is a super-2 number, since 2×66354546810² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66354546810.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6413962 + ... + 6424298.

It is an arithmetic number, because the mean of its divisors is an integer number (2556235908).

Almost surely, 2^66354546810 is an apocalyptic number.

66354546810 is an abundant number, since it is smaller than the sum of its proper divisors (97244551302).

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

66354546810 is a wasteful number, since it uses less digits than its factorization.

66354546810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16167.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 66354546810 in words is "sixty-six billion, three hundred fifty-four million, five hundred forty-six thousand, eight hundred ten".