66266402306461 has 16 divisors (see below), whose sum is σ = 76007336285440. Its totient is φ = 56594049459840.

The previous prime is 66266402306437. The next prime is 66266402306471. The reversal of 66266402306461 is 16460320466266.

It is a cyclic number.

It is not a de Polignac number, because 66266402306461 - 2⁹ = 66266402305949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66266402306399 and 66266402306408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66266402306471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232306720 + ... + 232591798.

It is an arithmetic number, because the mean of its divisors is an integer number (4750458517840).

Almost surely, 2^{66266402306461} is an apocalyptic number.

It is an amenable number.

66266402306461 is a deficient number, since it is larger than the sum of its proper divisors (9740933978979).

66266402306461 is a wasteful number, since it uses less digits than its factorization.

66266402306461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405244.

The product of its (nonzero) digits is 8957952, while the sum is 52.

The spelling of 66266402306461 in words is "sixty-six trillion, two hundred sixty-six billion, four hundred two million, three hundred six thousand, four hundred sixty-one".