66057221070001 has 48 divisors (see below), whose sum is σ = 77892106360320. Its totient is φ = 55852976874240.

The previous prime is 66057221069969. The next prime is 66057221070013. The reversal of 66057221070001 is 10007012275066.

It is not a de Polignac number, because 66057221070001 - 2⁵ = 66057221069969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66057221070601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 791280675 + ... + 791364151.

It is an arithmetic number, because the mean of its divisors is an integer number (1622752215840).

Almost surely, 2^{66057221070001} is an apocalyptic number.

It is an amenable number.

66057221070001 is a deficient number, since it is larger than the sum of its proper divisors (11834885290319).

66057221070001 is a wasteful number, since it uses less digits than its factorization.

66057221070001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84374 (or 84367 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 66057221070001 in words is "sixty-six trillion, fifty-seven billion, two hundred twenty-one million, seventy thousand, one".