66151751 has 2 divisors, whose sum is σ = 66151752. Its totient is φ = 66151750.

The previous prime is 66151739. The next prime is 66151781. The reversal of 66151751 is 15715166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66151751 - 2²² = 61957447 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66151721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33075875 + 33075876.

It is an arithmetic number, because the mean of its divisors is an integer number (33075876).

Almost surely, 2^66151751 is an apocalyptic number.

66151751 is a deficient number, since it is larger than the sum of its proper divisors (1).

66151751 is an equidigital number, since it uses as much as digits as its factorization.

66151751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 32.

The square root of 66151751 is about 8133.3726706699. The cubic root of 66151751 is about 404.4334933743.

The spelling of 66151751 in words is "sixty-six million, one hundred fifty-one thousand, seven hundred fifty-one".