161510055103 has 2 divisors, whose sum is σ = 161510055104. Its totient is φ = 161510055102.

The previous prime is 161510055001. The next prime is 161510055121. The reversal of 161510055103 is 301550015161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161510055103 - 2²⁵ = 161476500671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161510055403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80755027551 + 80755027552.

It is an arithmetic number, because the mean of its divisors is an integer number (80755027552).

Almost surely, 2^161510055103 is an apocalyptic number.

161510055103 is a deficient number, since it is larger than the sum of its proper divisors (1).

161510055103 is an equidigital number, since it uses as much as digits as its factorization.

161510055103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 28.

The spelling of 161510055103 in words is "one hundred sixty-one billion, five hundred ten million, fifty-five thousand, one hundred three".