98635157521897 has 2 divisors, whose sum is σ = 98635157521898. Its totient is φ = 98635157521896.

The previous prime is 98635157521841. The next prime is 98635157521903. The reversal of 98635157521897 is 79812575153689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77144321177856 + 21490836344041 = 8783184^2 + 4635821^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98635157521897 is a prime.

It is not a weakly prime, because it can be changed into another prime (98635157521097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49317578760948 + 49317578760949.

It is an arithmetic number, because the mean of its divisors is an integer number (49317578760949).

Almost surely, 2^{98635157521897} is an apocalyptic number.

It is an amenable number.

98635157521897 is a deficient number, since it is larger than the sum of its proper divisors (1).

98635157521897 is an equidigital number, since it uses as much as digits as its factorization.

98635157521897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072000, while the sum is 76.

The spelling of 98635157521897 in words is "ninety-eight trillion, six hundred thirty-five billion, one hundred fifty-seven million, five hundred twenty-one thousand, eight hundred ninety-seven".