66646026224402 has 32 divisors (see below), whose sum is σ = 109968807168000. Its totient is φ = 30178939624848.

The previous prime is 66646026224399. The next prime is 66646026224509. The reversal of 66646026224402 is 20442262064666.

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, 433827902 + ... + 433981497.

It is an arithmetic number, because the mean of its divisors is an integer number (3436525224000).

Almost surely, 2^{66646026224402} is an apocalyptic number.

66646026224402 is a deficient number, since it is larger than the sum of its proper divisors (43322780943598).

66646026224402 is a wasteful number, since it uses less digits than its factorization.

66646026224402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867809510.

The product of its (nonzero) digits is 7962624, while the sum is 50.

The spelling of 66646026224402 in words is "sixty-six trillion, six hundred forty-six billion, twenty-six million, two hundred twenty-four thousand, four hundred two".