97495691049 has 81 divisors (see below), whose sum is σ = 151460399727. Its totient is φ = 60430261248.

The previous prime is 97495691039. The next prime is 97495691057. The reversal of 97495691049 is 94019659479.

The square root of 97495691049 is 312243.

It is a perfect power (a square), and thus also a powerful number.

97495691049 is a `hidden beast` number, since 97 + 495 + 6 + 9 + 10 + 49 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 11904337449 + 85591353600 = 109107^2 + 292560^2 .

It is not a de Polignac number, because 97495691049 - 2¹¹ = 97495689001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97495691039) 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 in 80 ways as a sum of consecutive naturals, for example, 1005110169 + ... + 1005110265.

Almost surely, 2^97495691049 is an apocalyptic number.

97495691049 is the 312243-rd square number.

97495691049 is the 156122-nd centered octagonal number.

It is an amenable number.

97495691049 is a deficient number, since it is larger than the sum of its proper divisors (53964708678).

97495691049 is an equidigital number, since it uses as much as digits as its factorization.

97495691049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 63.

It can be divided in two parts, 97495 and 691049, that added together give a square (788544 = 888²).

The spelling of 97495691049 in words is "ninety-seven billion, four hundred ninety-five million, six hundred ninety-one thousand, forty-nine".