66736737404 has 6 divisors (see below), whose sum is σ = 116789290464. Its totient is φ = 33368368700.

The previous prime is 66736737373. The next prime is 66736737409. The reversal of 66736737404 is 40473763766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66736737409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8342092172 + ... + 8342092179.

It is an arithmetic number, because the mean of its divisors is an integer number (19464881744).

Almost surely, 2^66736737404 is an apocalyptic number.

It is an amenable number.

66736737404 is a deficient number, since it is larger than the sum of its proper divisors (50052553060).

66736737404 is a wasteful number, since it uses less digits than its factorization.

66736737404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16684184355 (or 16684184353 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 53.

The spelling of 66736737404 in words is "sixty-six billion, seven hundred thirty-six million, seven hundred thirty-seven thousand, four hundred four".