97859581511 has 2 divisors, whose sum is σ = 97859581512. Its totient is φ = 97859581510.

The previous prime is 97859581471. The next prime is 97859581517. The reversal of 97859581511 is 11518595879.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97859581511 - 2²² = 97855387207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97859581517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48929790755 + 48929790756.

It is an arithmetic number, because the mean of its divisors is an integer number (48929790756).

Almost surely, 2^97859581511 is an apocalyptic number.

97859581511 is a deficient number, since it is larger than the sum of its proper divisors (1).

97859581511 is an equidigital number, since it uses as much as digits as its factorization.

97859581511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536000, while the sum is 59.

The spelling of 97859581511 in words is "ninety-seven billion, eight hundred fifty-nine million, five hundred eighty-one thousand, five hundred eleven".