1616057788769 has 2 divisors, whose sum is σ = 1616057788770. Its totient is φ = 1616057788768.

The previous prime is 1616057788759. The next prime is 1616057788801. The reversal of 1616057788769 is 9678877506161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1472613801169 + 143443987600 = 1213513^2 + 378740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616057788769 - 2²⁴ = 1616041011553 is a prime.

It is a super-2 number, since 2×1616057788769² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1616057788759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808028894384 + 808028894385.

It is an arithmetic number, because the mean of its divisors is an integer number (808028894385).

Almost surely, 2^{1616057788769} is an apocalyptic number.

It is an amenable number.

1616057788769 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616057788769 is an equidigital number, since it uses as much as digits as its factorization.

1616057788769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 213373440, while the sum is 71.

The spelling of 1616057788769 in words is "one trillion, six hundred sixteen billion, fifty-seven million, seven hundred eighty-eight thousand, seven hundred sixty-nine".