97499759578957 has 2 divisors, whose sum is σ = 97499759578958. Its totient is φ = 97499759578956.

The previous prime is 97499759578933. The next prime is 97499759579051. The reversal of 97499759578957 is 75987595799479.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78916021473961 + 18583738104996 = 8883469^2 + 4310886^2 .

It is a cyclic number.

It is not a de Polignac number, because 97499759578957 - 2⁷ = 97499759578829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97499759578057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48749879789478 + 48749879789479.

It is an arithmetic number, because the mean of its divisors is an integer number (48749879789479).

Almost surely, 2^{97499759578957} is an apocalyptic number.

It is an amenable number.

97499759578957 is a deficient number, since it is larger than the sum of its proper divisors (1).

97499759578957 is an equidigital number, since it uses as much as digits as its factorization.

97499759578957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567106596000, while the sum is 100.

The spelling of 97499759578957 in words is "ninety-seven trillion, four hundred ninety-nine billion, seven hundred fifty-nine million, five hundred seventy-eight thousand, nine hundred fifty-seven".