2621717147873 has 2 divisors, whose sum is σ = 2621717147874. Its totient is φ = 2621717147872.

The previous prime is 2621717147837. The next prime is 2621717147923. The reversal of 2621717147873 is 3787417171262.

Together with previous prime (2621717147837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2561462608849 + 60254539024 = 1600457^2 + 245468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2621717147873 - 2¹⁴ = 2621717131489 is a prime.

It is not a weakly prime, because it can be changed into another prime (2621717147473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310858573936 + 1310858573937.

It is an arithmetic number, because the mean of its divisors is an integer number (1310858573937).

Almost surely, 2^{2621717147873} is an apocalyptic number.

It is an amenable number.

2621717147873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621717147873 is an equidigital number, since it uses as much as digits as its factorization.

2621717147873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5531904, while the sum is 56.

The spelling of 2621717147873 in words is "two trillion, six hundred twenty-one billion, seven hundred seventeen million, one hundred forty-seven thousand, eight hundred seventy-three".