64166691277675 has 24 divisors (see below), whose sum is σ = 93151255250592. Its totient is φ = 42926845728000.

The previous prime is 64166691277673. The next prime is 64166691277681. The reversal of 64166691277675 is 57677219666146.

It is not a de Polignac number, because 64166691277675 - 2¹ = 64166691277673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64166691277598 and 64166691277607.

It is not an unprimeable number, because it can be changed into a prime (64166691277673) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4471539256 + ... + 4471553605.

It is an arithmetic number, because the mean of its divisors is an integer number (3881302302108).

Almost surely, 2^{64166691277675} is an apocalyptic number.

64166691277675 is a deficient number, since it is larger than the sum of its proper divisors (28984563972917).

64166691277675 is a wasteful number, since it uses less digits than its factorization.

64166691277675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8943092919 (or 8943092914 counting only the distinct ones).

The product of its digits is 960180480, while the sum is 73.

The spelling of 64166691277675 in words is "sixty-four trillion, one hundred sixty-six billion, six hundred ninety-one million, two hundred seventy-seven thousand, six hundred seventy-five".