66763122123 has 18 divisors (see below), whose sum is σ = 89533037052. Its totient is φ = 44252458560.

The previous prime is 66763122091. The next prime is 66763122137. The reversal of 66763122123 is 32122136766.

It is not a de Polignac number, because 66763122123 - 2⁵ = 66763122091 is a prime.

It is a super-2 number, since 2×66763122123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66763122163) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 107856108 + ... + 107856726.

It is an arithmetic number, because the mean of its divisors is an integer number (4974057614).

Almost surely, 2^66763122123 is an apocalyptic number.

66763122123 is a deficient number, since it is larger than the sum of its proper divisors (22769914929).

66763122123 is an frugal number, since it uses more digits than its factorization.

66763122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723 (or 863 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

Adding to 66763122123 its reverse (32122136766), we get a palindrome (98885258889).

The spelling of 66763122123 in words is "sixty-six billion, seven hundred sixty-three million, one hundred twenty-two thousand, one hundred twenty-three".