2658555261049 has 2 divisors, whose sum is σ = 2658555261050. Its totient is φ = 2658555261048.

The previous prime is 2658555260951. The next prime is 2658555261067. The reversal of 2658555261049 is 9401625558562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2209162005625 + 449393255424 = 1486325^2 + 670368^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658555261049 - 2¹⁵ = 2658555228281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2658555260984 and 2658555261002.

It is not a weakly prime, because it can be changed into another prime (2658555268049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1329277630524 + 1329277630525.

It is an arithmetic number, because the mean of its divisors is an integer number (1329277630525).

Almost surely, 2^{2658555261049} is an apocalyptic number.

It is an amenable number.

2658555261049 is a deficient number, since it is larger than the sum of its proper divisors (1).

2658555261049 is an equidigital number, since it uses as much as digits as its factorization.

2658555261049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920000, while the sum is 58.

The spelling of 2658555261049 in words is "two trillion, six hundred fifty-eight billion, five hundred fifty-five million, two hundred sixty-one thousand, forty-nine".