97887192773 has 2 divisors, whose sum is σ = 97887192774. Its totient is φ = 97887192772.

The previous prime is 97887192757. The next prime is 97887192779. The reversal of 97887192773 is 37729178879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96111160324 + 1776032449 = 310018^2 + 42143^2 .

It is a cyclic number.

It is not a de Polignac number, because 97887192773 - 2⁴ = 97887192757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97887192779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48943596386 + 48943596387.

It is an arithmetic number, because the mean of its divisors is an integer number (48943596387).

Almost surely, 2^97887192773 is an apocalyptic number.

It is an amenable number.

97887192773 is a deficient number, since it is larger than the sum of its proper divisors (1).

97887192773 is an equidigital number, since it uses as much as digits as its factorization.

97887192773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74680704, while the sum is 68.

The spelling of 97887192773 in words is "ninety-seven billion, eight hundred eighty-seven million, one hundred ninety-two thousand, seven hundred seventy-three".