97145040761 has 2 divisors, whose sum is σ = 97145040762. Its totient is φ = 97145040760.

The previous prime is 97145040757. The next prime is 97145040823. The reversal of 97145040761 is 16704054179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55610600761 + 41534440000 = 235819^2 + 203800^2 .

It is a cyclic number.

It is not a de Polignac number, because 97145040761 - 2² = 97145040757 is a prime.

It is not a weakly prime, because it can be changed into another prime (97145040731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48572520380 + 48572520381.

It is an arithmetic number, because the mean of its divisors is an integer number (48572520381).

Almost surely, 2^97145040761 is an apocalyptic number.

It is an amenable number.

97145040761 is a deficient number, since it is larger than the sum of its proper divisors (1).

97145040761 is an equidigital number, since it uses as much as digits as its factorization.

97145040761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 97145040761 in words is "ninety-seven billion, one hundred forty-five million, forty thousand, seven hundred sixty-one".