97800087269 has 2 divisors, whose sum is σ = 97800087270. Its totient is φ = 97800087268.

The previous prime is 97800087227. The next prime is 97800087277. The reversal of 97800087269 is 96278000879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94409936644 + 3390150625 = 307262^2 + 58225^2 .

It is an emirp because it is prime and its reverse (96278000879) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97800087269 is a prime.

It is a super-2 number, since 2×97800087269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97800087289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48900043634 + 48900043635.

It is an arithmetic number, because the mean of its divisors is an integer number (48900043635).

Almost surely, 2^97800087269 is an apocalyptic number.

It is an amenable number.

97800087269 is a deficient number, since it is larger than the sum of its proper divisors (1).

97800087269 is an equidigital number, since it uses as much as digits as its factorization.

97800087269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 97800087269 in words is "ninety-seven billion, eight hundred million, eighty-seven thousand, two hundred sixty-nine".