1616537226851 has 2 divisors, whose sum is σ = 1616537226852. Its totient is φ = 1616537226850.

The previous prime is 1616537226847. The next prime is 1616537226883. The reversal of 1616537226851 is 1586227356161.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1616537226851 - 2² = 1616537226847 is a prime.

It is a super-2 number, since 2×1616537226851² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616537226793 and 1616537226802.

It is not a weakly prime, because it can be changed into another prime (1616537222851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808268613425 + 808268613426.

It is an arithmetic number, because the mean of its divisors is an integer number (808268613426).

Almost surely, 2^{1616537226851} is an apocalyptic number.

1616537226851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616537226851 is an equidigital number, since it uses as much as digits as its factorization.

1616537226851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 53.

The spelling of 1616537226851 in words is "one trillion, six hundred sixteen billion, five hundred thirty-seven million, two hundred twenty-six thousand, eight hundred fifty-one".