1600432642621 has 2 divisors, whose sum is σ = 1600432642622. Its totient is φ = 1600432642620.

The previous prime is 1600432642573. The next prime is 1600432642631. The reversal of 1600432642621 is 1262462340061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188076020121 + 412356622500 = 1089989^2 + 642150^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600432642621 - 2¹³ = 1600432634429 is a prime.

It is a super-2 number, since 2×1600432642621² (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 (1600432642631) 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, 800216321310 + 800216321311.

It is an arithmetic number, because the mean of its divisors is an integer number (800216321311).

Almost surely, 2^{1600432642621} is an apocalyptic number.

It is an amenable number.

1600432642621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600432642621 is an equidigital number, since it uses as much as digits as its factorization.

1600432642621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

Adding to 1600432642621 its reverse (1262462340061), we get a palindrome (2862894982682).

The spelling of 1600432642621 in words is "one trillion, six hundred billion, four hundred thirty-two million, six hundred forty-two thousand, six hundred twenty-one".