651165006497 has 2 divisors, whose sum is σ = 651165006498. Its totient is φ = 651165006496.

The previous prime is 651165006461. The next prime is 651165006509. The reversal of 651165006497 is 794600561156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 625086309376 + 26078697121 = 790624^2 + 161489^2 .

It is a cyclic number.

It is not a de Polignac number, because 651165006497 - 2⁸ = 651165006241 is a prime.

It is a super-2 number, since 2×651165006497² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (651165003497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325582503248 + 325582503249.

It is an arithmetic number, because the mean of its divisors is an integer number (325582503249).

Almost surely, 2^651165006497 is an apocalyptic number.

It is an amenable number.

651165006497 is a deficient number, since it is larger than the sum of its proper divisors (1).

651165006497 is an equidigital number, since it uses as much as digits as its factorization.

651165006497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 651165006497 in words is "six hundred fifty-one billion, one hundred sixty-five million, six thousand, four hundred ninety-seven".