66403369670 has 32 divisors (see below), whose sum is σ = 130641500160. Its totient is φ = 24100489440.

The previous prime is 66403369663. The next prime is 66403369687. The reversal of 66403369670 is 7696330466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519590 + ... + 634649.

It is an arithmetic number, because the mean of its divisors is an integer number (4082546880).

Almost surely, 2^66403369670 is an apocalyptic number.

66403369670 is a deficient number, since it is larger than the sum of its proper divisors (64238130490).

66403369670 is a wasteful number, since it uses less digits than its factorization.

66403369670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154780.

The product of its (nonzero) digits is 2939328, while the sum is 50.

The spelling of 66403369670 in words is "sixty-six billion, four hundred three million, three hundred sixty-nine thousand, six hundred seventy".