97651215679 has 2 divisors, whose sum is σ = 97651215680. Its totient is φ = 97651215678.

The previous prime is 97651215589. The next prime is 97651215689.

97651215679 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 97651215679 - 2⁷ = 97651215551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97651215689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48825607839 + 48825607840.

It is an arithmetic number, because the mean of its divisors is an integer number (48825607840).

Almost surely, 2^97651215679 is an apocalyptic number.

97651215679 is a deficient number, since it is larger than the sum of its proper divisors (1).

97651215679 is an equidigital number, since it uses as much as digits as its factorization.

97651215679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7144200, while the sum is 58.

The spelling of 97651215679 in words is "ninety-seven billion, six hundred fifty-one million, two hundred fifteen thousand, six hundred seventy-nine".