66518149163 has 4 divisors (see below), whose sum is σ = 67645575480. Its totient is φ = 65390722848.

The previous prime is 66518149133. The next prime is 66518149193. The reversal of 66518149163 is 36194181566.

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

It is an interprime number because it is at equal distance from previous prime (66518149133) and next prime (66518149193).

It is a cyclic number.

It is not a de Polignac number, because 66518149163 - 2¹⁰ = 66518148139 is a prime.

It is a super-2 number, since 2×66518149163² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66518149133) 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, 563713070 + ... + 563713187.

It is an arithmetic number, because the mean of its divisors is an integer number (16911393870).

Almost surely, 2^66518149163 is an apocalyptic number.

66518149163 is a deficient number, since it is larger than the sum of its proper divisors (1127426317).

66518149163 is a wasteful number, since it uses less digits than its factorization.

66518149163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127426316.

The product of its digits is 933120, while the sum is 50.

The spelling of 66518149163 in words is "sixty-six billion, five hundred eighteen million, one hundred forty-nine thousand, one hundred sixty-three".