66525054574 has 16 divisors (see below), whose sum is σ = 109876559616. Its totient is φ = 29956055800.

The previous prime is 66525054503. The next prime is 66525054581. The reversal of 66525054574 is 47545052566.

It is a super-3 number, since 3×66525054574³ (a number of 33 digits) contains 333 as substring.

It is a congruent 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, 14127862 + ... + 14132569.

It is an arithmetic number, because the mean of its divisors is an integer number (6867284976).

Almost surely, 2^66525054574 is an apocalyptic number.

66525054574 is a deficient number, since it is larger than the sum of its proper divisors (43351505042).

66525054574 is a wasteful number, since it uses less digits than its factorization.

66525054574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28260551.

The product of its (nonzero) digits is 5040000, while the sum is 49.

The spelling of 66525054574 in words is "sixty-six billion, five hundred twenty-five million, fifty-four thousand, five hundred seventy-four".