66889476074 has 16 divisors (see below), whose sum is σ = 102488761728. Its totient is φ = 32726830272.

The previous prime is 66889475999. The next prime is 66889476103. The reversal of 66889476074 is 47067498866.

It is a self number, because there is not a number n which added to its sum of digits gives 66889476074.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440969 + ... + 572915.

It is an arithmetic number, because the mean of its divisors is an integer number (6405547608).

Almost surely, 2^66889476074 is an apocalyptic number.

66889476074 is a deficient number, since it is larger than the sum of its proper divisors (35599285654).

66889476074 is a wasteful number, since it uses less digits than its factorization.

66889476074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137389.

The product of its (nonzero) digits is 97542144, while the sum is 65.

The spelling of 66889476074 in words is "sixty-six billion, eight hundred eighty-nine million, four hundred seventy-six thousand, seventy-four".