19747098657331 has 2 divisors, whose sum is σ = 19747098657332. Its totient is φ = 19747098657330.

The previous prime is 19747098657301. The next prime is 19747098657359. The reversal of 19747098657331 is 13375689074791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19747098657331 is a prime.

It is a super-2 number, since 2×19747098657331² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19747098657301) 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, 9873549328665 + 9873549328666.

It is an arithmetic number, because the mean of its divisors is an integer number (9873549328666).

Almost surely, 2^{19747098657331} is an apocalyptic number.

19747098657331 is a deficient number, since it is larger than the sum of its proper divisors (1).

19747098657331 is an equidigital number, since it uses as much as digits as its factorization.

19747098657331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240045120, while the sum is 70.

The spelling of 19747098657331 in words is "nineteen trillion, seven hundred forty-seven billion, ninety-eight million, six hundred fifty-seven thousand, three hundred thirty-one".