161366335151 has 4 divisors (see below), whose sum is σ = 184418668752. Its totient is φ = 138314001552.

The previous prime is 161366335139. The next prime is 161366335153. The reversal of 161366335151 is 151533663161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 151533663161 = 97 ⋅1562202713.

It is a cyclic number.

It is not a de Polignac number, because 161366335151 - 2¹⁸ = 161366073007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161366335099 and 161366335108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161366335153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11526166790 + ... + 11526166803.

It is an arithmetic number, because the mean of its divisors is an integer number (46104667188).

Almost surely, 2^161366335151 is an apocalyptic number.

161366335151 is a deficient number, since it is larger than the sum of its proper divisors (23052333601).

161366335151 is an equidigital number, since it uses as much as digits as its factorization.

161366335151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23052333600.

The product of its digits is 145800, while the sum is 41.

The spelling of 161366335151 in words is "one hundred sixty-one billion, three hundred sixty-six million, three hundred thirty-five thousand, one hundred fifty-one".