1616254222049 has 2 divisors, whose sum is σ = 1616254222050. Its totient is φ = 1616254222048.

The previous prime is 1616254222021. The next prime is 1616254222069. The reversal of 1616254222049 is 9402224526161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094182945024 + 522071277025 = 1046032^2 + 722545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616254222049 - 2²⁰ = 1616253173473 is a prime.

It is a super-2 number, since 2×1616254222049² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1616254222069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808127111024 + 808127111025.

It is an arithmetic number, because the mean of its divisors is an integer number (808127111025).

Almost surely, 2^{1616254222049} is an apocalyptic number.

It is an amenable number.

1616254222049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616254222049 is an equidigital number, since it uses as much as digits as its factorization.

1616254222049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 1616254222049 in words is "one trillion, six hundred sixteen billion, two hundred fifty-four million, two hundred twenty-two thousand, forty-nine".