629749377091 has 2 divisors, whose sum is σ = 629749377092. Its totient is φ = 629749377090.

The previous prime is 629749377071. The next prime is 629749377109. The reversal of 629749377091 is 190773947926.

Together with next prime (629749377109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629749377091 - 2¹⁷ = 629749246019 is a prime.

It is not a weakly prime, because it can be changed into another prime (629749377071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314874688545 + 314874688546.

It is an arithmetic number, because the mean of its divisors is an integer number (314874688546).

Almost surely, 2^629749377091 is an apocalyptic number.

629749377091 is a deficient number, since it is larger than the sum of its proper divisors (1).

629749377091 is an equidigital number, since it uses as much as digits as its factorization.

629749377091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36006768, while the sum is 64.

The spelling of 629749377091 in words is "six hundred twenty-nine billion, seven hundred forty-nine million, three hundred seventy-seven thousand, ninety-one".