5558102500721 has 2 divisors, whose sum is σ = 5558102500722. Its totient is φ = 5558102500720.

The previous prime is 5558102500711. The next prime is 5558102500771. The reversal of 5558102500721 is 1270052018555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5539602420496 + 18500080225 = 2353636^2 + 136015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5558102500721 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5558102500711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2779051250360 + 2779051250361.

It is an arithmetic number, because the mean of its divisors is an integer number (2779051250361).

Almost surely, 2^{5558102500721} is an apocalyptic number.

It is an amenable number.

5558102500721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5558102500721 is an equidigital number, since it uses as much as digits as its factorization.

5558102500721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140000, while the sum is 41.

The spelling of 5558102500721 in words is "five trillion, five hundred fifty-eight billion, one hundred two million, five hundred thousand, seven hundred twenty-one".