161455654263 has 8 divisors (see below), whose sum is σ = 215287671808. Its totient is φ = 107630369784.

The previous prime is 161455654249. The next prime is 161455654271. The reversal of 161455654263 is 362456554161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161455654263 - 2⁵ = 161455654231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161455654363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1627045 + ... + 1723422.

It is an arithmetic number, because the mean of its divisors is an integer number (26910958976).

Almost surely, 2^161455654263 is an apocalyptic number.

161455654263 is a deficient number, since it is larger than the sum of its proper divisors (53832017545).

161455654263 is a wasteful number, since it uses less digits than its factorization.

161455654263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366533.

The product of its digits is 2592000, while the sum is 48.

The spelling of 161455654263 in words is "one hundred sixty-one billion, four hundred fifty-five million, six hundred fifty-four thousand, two hundred sixty-three".