650642157899 has 2 divisors, whose sum is σ = 650642157900. Its totient is φ = 650642157898.

The previous prime is 650642157889. The next prime is 650642157911. The reversal of 650642157899 is 998751246056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 650642157899 - 2⁴ = 650642157883 is a prime.

It is not a weakly prime, because it can be changed into another prime (650642157859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325321078949 + 325321078950.

It is an arithmetic number, because the mean of its divisors is an integer number (325321078950).

Almost surely, 2^650642157899 is an apocalyptic number.

650642157899 is a deficient number, since it is larger than the sum of its proper divisors (1).

650642157899 is an equidigital number, since it uses as much as digits as its factorization.

650642157899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32659200, while the sum is 62.

The spelling of 650642157899 in words is "six hundred fifty billion, six hundred forty-two million, one hundred fifty-seven thousand, eight hundred ninety-nine".