97071157009 has 2 divisors, whose sum is σ = 97071157010. Its totient is φ = 97071157008.

The previous prime is 97071156991. The next prime is 97071157031. The reversal of 97071157009 is 90075117079.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94923761409 + 2147395600 = 308097^2 + 46340^2 .

It is an emirp because it is prime and its reverse (90075117079) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97071157009 - 2¹³ = 97071148817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97071157009.

It is not a weakly prime, because it can be changed into another prime (97071157109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48535578504 + 48535578505.

It is an arithmetic number, because the mean of its divisors is an integer number (48535578505).

Almost surely, 2^97071157009 is an apocalyptic number.

It is an amenable number.

97071157009 is a deficient number, since it is larger than the sum of its proper divisors (1).

97071157009 is an equidigital number, since it uses as much as digits as its factorization.

97071157009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138915, while the sum is 46.

The spelling of 97071157009 in words is "ninety-seven billion, seventy-one million, one hundred fifty-seven thousand, nine".