2101958584247 has 2 divisors, whose sum is σ = 2101958584248. Its totient is φ = 2101958584246.

The previous prime is 2101958584207. The next prime is 2101958584277. The reversal of 2101958584247 is 7424858591012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101958584247 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101958584192 and 2101958584201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101958584207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050979292123 + 1050979292124.

It is an arithmetic number, because the mean of its divisors is an integer number (1050979292124).

Almost surely, 2^{2101958584247} is an apocalyptic number.

2101958584247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101958584247 is an equidigital number, since it uses as much as digits as its factorization.

2101958584247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6451200, while the sum is 56.

The spelling of 2101958584247 in words is "two trillion, one hundred one billion, nine hundred fifty-eight million, five hundred eighty-four thousand, two hundred forty-seven".