66571007311052 has 6 divisors (see below), whose sum is σ = 116499262794348. Its totient is φ = 33285503655524.

The previous prime is 66571007311049. The next prime is 66571007311087. The reversal of 66571007311052 is 25011370017566.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 66571007310994 and 66571007311012.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8321375913878 + ... + 8321375913885.

It is an arithmetic number, because the mean of its divisors is an integer number (19416543799058).

Almost surely, 2^{66571007311052} is an apocalyptic number.

It is an amenable number.

66571007311052 is a deficient number, since it is larger than the sum of its proper divisors (49928255483296).

66571007311052 is a wasteful number, since it uses less digits than its factorization.

66571007311052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16642751827767 (or 16642751827765 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 44.

The spelling of 66571007311052 in words is "sixty-six trillion, five hundred seventy-one billion, seven million, three hundred eleven thousand, fifty-two".