66413196139867 has 4 divisors (see below), whose sum is σ = 66416046881976. Its totient is φ = 66410345397760.

The previous prime is 66413196139853. The next prime is 66413196139897. The reversal of 66413196139867 is 76893169131466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66413196139867 - 2¹¹ = 66413196137819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66413196139796 and 66413196139805.

It is not an unprimeable number, because it can be changed into a prime (66413196139897) 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, 1425336109 + ... + 1425382702.

It is an arithmetic number, because the mean of its divisors is an integer number (16604011720494).

Almost surely, 2^{66413196139867} is an apocalyptic number.

66413196139867 is a deficient number, since it is larger than the sum of its proper divisors (2850742109).

66413196139867 is a wasteful number, since it uses less digits than its factorization.

66413196139867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850742108.

The product of its digits is 211631616, while the sum is 70.

The spelling of 66413196139867 in words is "sixty-six trillion, four hundred thirteen billion, one hundred ninety-six million, one hundred thirty-nine thousand, eight hundred sixty-seven".