99673147518731 has 2 divisors, whose sum is σ = 99673147518732. Its totient is φ = 99673147518730.

The previous prime is 99673147518677. The next prime is 99673147518733. The reversal of 99673147518731 is 13781574137699.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99673147518731 is a prime.

It is a super-2 number, since 2×99673147518731² (a number of 29 digits) contains 22 as substring.

Together with 99673147518733, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99673147518733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49836573759365 + 49836573759366.

It is an arithmetic number, because the mean of its divisors is an integer number (49836573759366).

Almost surely, 2^{99673147518731} is an apocalyptic number.

99673147518731 is a deficient number, since it is larger than the sum of its proper divisors (1).

99673147518731 is an equidigital number, since it uses as much as digits as its factorization.

99673147518731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 71.

The spelling of 99673147518731 in words is "ninety-nine trillion, six hundred seventy-three billion, one hundred forty-seven million, five hundred eighteen thousand, seven hundred thirty-one".