97804002071 has 2 divisors, whose sum is σ = 97804002072. Its totient is φ = 97804002070.

The previous prime is 97804002041. The next prime is 97804002077. The reversal of 97804002071 is 17020040879.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97804002071 is a prime.

It is a super-2 number, since 2×97804002071² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97804002077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48902001035 + 48902001036.

It is an arithmetic number, because the mean of its divisors is an integer number (48902001036).

Almost surely, 2^97804002071 is an apocalyptic number.

97804002071 is a deficient number, since it is larger than the sum of its proper divisors (1).

97804002071 is an equidigital number, since it uses as much as digits as its factorization.

97804002071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 97804002071 in words is "ninety-seven billion, eight hundred four million, two thousand, seventy-one".