1616611510247 has 2 divisors, whose sum is σ = 1616611510248. Its totient is φ = 1616611510246.

The previous prime is 1616611510229. The next prime is 1616611510273. The reversal of 1616611510247 is 7420151166161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1616611510247 - 2¹⁰ = 1616611509223 is a prime.

It is a super-2 number, since 2×1616611510247² (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 (1616611510207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808305755123 + 808305755124.

It is an arithmetic number, because the mean of its divisors is an integer number (808305755124).

Almost surely, 2^{1616611510247} is an apocalyptic number.

1616611510247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616611510247 is an equidigital number, since it uses as much as digits as its factorization.

1616611510247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 1616611510247 in words is "one trillion, six hundred sixteen billion, six hundred eleven million, five hundred ten thousand, two hundred forty-seven".