66116051 has 2 divisors, whose sum is σ = 66116052. Its totient is φ = 66116050.

The previous prime is 66116047. The next prime is 66116059. The reversal of 66116051 is 15061166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66116051 - 2² = 66116047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66116051.

It is not a weakly prime, because it can be changed into another prime (66116059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33058025 + 33058026.

It is an arithmetic number, because the mean of its divisors is an integer number (33058026).

Almost surely, 2^66116051 is an apocalyptic number.

66116051 is a deficient number, since it is larger than the sum of its proper divisors (1).

66116051 is an equidigital number, since it uses as much as digits as its factorization.

66116051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 66116051 is about 8131.1777129761. The cubic root of 66116051 is about 404.3607269770.

The spelling of 66116051 in words is "sixty-six million, one hundred sixteen thousand, fifty-one".