75057061666 has 16 divisors (see below), whose sum is σ = 115230332448. Its totient is φ = 36647352000.

The previous prime is 75057061657. The next prime is 75057061691. The reversal of 75057061666 is 66616075057.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284746 + ... + 480826.

It is an arithmetic number, because the mean of its divisors is an integer number (7201895778).

Almost surely, 2^75057061666 is an apocalyptic number.

75057061666 is a deficient number, since it is larger than the sum of its proper divisors (40173270782).

75057061666 is a wasteful number, since it uses less digits than its factorization.

75057061666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200577.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 75057061666 in words is "seventy-five billion, fifty-seven million, sixty-one thousand, six hundred sixty-six".