97558540819 has 2 divisors, whose sum is σ = 97558540820. Its totient is φ = 97558540818.

The previous prime is 97558540787. The next prime is 97558540831. The reversal of 97558540819 is 91804585579.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97558540819 - 2⁵ = 97558540787 is a prime.

It is a super-2 number, since 2×97558540819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97558540889) 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, 48779270409 + 48779270410.

It is an arithmetic number, because the mean of its divisors is an integer number (48779270410).

Almost surely, 2^97558540819 is an apocalyptic number.

97558540819 is a deficient number, since it is larger than the sum of its proper divisors (1).

97558540819 is an equidigital number, since it uses as much as digits as its factorization.

97558540819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144000, while the sum is 61.

The spelling of 97558540819 in words is "ninety-seven billion, five hundred fifty-eight million, five hundred forty thousand, eight hundred nineteen".