97809280451 has 2 divisors, whose sum is σ = 97809280452. Its totient is φ = 97809280450.

The previous prime is 97809280433. The next prime is 97809280477. The reversal of 97809280451 is 15408290879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97809280451 - 2¹⁴ = 97809264067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97809280393 and 97809280402.

It is not a weakly prime, because it can be changed into another prime (97809280951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48904640225 + 48904640226.

It is an arithmetic number, because the mean of its divisors is an integer number (48904640226).

Almost surely, 2^97809280451 is an apocalyptic number.

97809280451 is a deficient number, since it is larger than the sum of its proper divisors (1).

97809280451 is an equidigital number, since it uses as much as digits as its factorization.

97809280451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 97809280451 in words is "ninety-seven billion, eight hundred nine million, two hundred eighty thousand, four hundred fifty-one".