1616057350381 has 2 divisors, whose sum is σ = 1616057350382. Its totient is φ = 1616057350380.

The previous prime is 1616057350337. The next prime is 1616057350393. The reversal of 1616057350381 is 1830537506161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902564601156 + 713492749225 = 950034^2 + 844685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616057350381 - 2¹⁵ = 1616057317613 is a prime.

It is a super-2 number, since 2×1616057350381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616057350681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808028675190 + 808028675191.

It is an arithmetic number, because the mean of its divisors is an integer number (808028675191).

Almost surely, 2^{1616057350381} is an apocalyptic number.

It is an amenable number.

1616057350381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616057350381 is an equidigital number, since it uses as much as digits as its factorization.

1616057350381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 1616057350381 in words is "one trillion, six hundred sixteen billion, fifty-seven million, three hundred fifty thousand, three hundred eighty-one".