97028147869 has 2 divisors, whose sum is σ = 97028147870. Its totient is φ = 97028147868.

The previous prime is 97028147851. The next prime is 97028147891. The reversal of 97028147869 is 96874182079.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86884636644 + 10143511225 = 294762^2 + 100715^2 .

It is a cyclic number.

It is not a de Polignac number, because 97028147869 - 2¹¹ = 97028145821 is a prime.

It is a super-2 number, since 2×97028147869² (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 (97028147669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48514073934 + 48514073935.

It is an arithmetic number, because the mean of its divisors is an integer number (48514073935).

Almost surely, 2^97028147869 is an apocalyptic number.

It is an amenable number.

97028147869 is a deficient number, since it is larger than the sum of its proper divisors (1).

97028147869 is an equidigital number, since it uses as much as digits as its factorization.

97028147869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 97028147869 in words is "ninety-seven billion, twenty-eight million, one hundred forty-seven thousand, eight hundred sixty-nine".