66116556151 has 4 divisors (see below), whose sum is σ = 66117165352. Its totient is φ = 66115946952.

The previous prime is 66116556133. The next prime is 66116556167. The reversal of 66116556151 is 15165561166.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66116556151 - 2⁵ = 66116556119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66116556098 and 66116556107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66116556101) 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, 92640 + ... + 375253.

It is an arithmetic number, because the mean of its divisors is an integer number (16529291338).

Almost surely, 2^66116556151 is an apocalyptic number.

66116556151 is a deficient number, since it is larger than the sum of its proper divisors (609201).

66116556151 is a wasteful number, since it uses less digits than its factorization.

66116556151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609200.

The product of its digits is 162000, while the sum is 43.

The spelling of 66116556151 in words is "sixty-six billion, one hundred sixteen million, five hundred fifty-six thousand, one hundred fifty-one".