66050201212061 has 4 divisors (see below), whose sum is σ = 72054764958624. Its totient is φ = 60045637465500.

The previous prime is 66050201212057. The next prime is 66050201212069. The reversal of 66050201212061 is 16021210205066.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66050201212061 - 2² = 66050201212057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66050201212069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3002281873265 + ... + 3002281873286.

It is an arithmetic number, because the mean of its divisors is an integer number (18013691239656).

Almost surely, 2^{66050201212061} is an apocalyptic number.

It is an amenable number.

66050201212061 is a deficient number, since it is larger than the sum of its proper divisors (6004563746563).

66050201212061 is a wasteful number, since it uses less digits than its factorization.

66050201212061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6004563746562.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 66050201212061 in words is "sixty-six trillion, fifty billion, two hundred one million, two hundred twelve thousand, sixty-one".