651316499 has 2 divisors, whose sum is σ = 651316500. Its totient is φ = 651316498.

The previous prime is 651316493. The next prime is 651316531. The reversal of 651316499 is 994613156.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 651316499 - 2²⁸ = 382881043 is a prime.

It is a super-3 number, since 3×651316499³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (651316493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325658249 + 325658250.

It is an arithmetic number, because the mean of its divisors is an integer number (325658250).

Almost surely, 2^651316499 is an apocalyptic number.

651316499 is a deficient number, since it is larger than the sum of its proper divisors (1).

651316499 is an equidigital number, since it uses as much as digits as its factorization.

651316499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 651316499 is about 25520.9031775915. The cubic root of 651316499 is about 866.8235329632.

The spelling of 651316499 in words is "six hundred fifty-one million, three hundred sixteen thousand, four hundred ninety-nine".