648941958967 has 2 divisors, whose sum is σ = 648941958968. Its totient is φ = 648941958966.

The previous prime is 648941958911. The next prime is 648941958991. The reversal of 648941958967 is 769859149846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648941958967 is a prime.

It is a super-2 number, since 2×648941958967² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648941958893 and 648941958902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648941958997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324470979483 + 324470979484.

It is an arithmetic number, because the mean of its divisors is an integer number (324470979484).

Almost surely, 2^648941958967 is an apocalyptic number.

648941958967 is a deficient number, since it is larger than the sum of its proper divisors (1).

648941958967 is an equidigital number, since it uses as much as digits as its factorization.

648941958967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 940584960, while the sum is 76.

The spelling of 648941958967 in words is "six hundred forty-eight billion, nine hundred forty-one million, nine hundred fifty-eight thousand, nine hundred sixty-seven".