66113132101 has 4 divisors (see below), whose sum is σ = 66124653804. Its totient is φ = 66101610400.

The previous prime is 66113132047. The next prime is 66113132117. The reversal of 66113132101 is 10123131166.

66113132101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10123131166 = 2 ⋅5061565583.

It can be written as a sum of positive squares in 2 ways, for example, as 10062096100 + 56051036001 = 100310^2 + 236751^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66113132101 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 (66113132171) 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, 5752240 + ... + 5763721.

It is an arithmetic number, because the mean of its divisors is an integer number (16531163451).

Almost surely, 2^66113132101 is an apocalyptic number.

It is an amenable number.

66113132101 is a deficient number, since it is larger than the sum of its proper divisors (11521703).

66113132101 is a wasteful number, since it uses less digits than its factorization.

66113132101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11521702.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 66113132101 its reverse (10123131166), we get a palindrome (76236263267).

The spelling of 66113132101 in words is "sixty-six billion, one hundred thirteen million, one hundred thirty-two thousand, one hundred one".