161622567383 has 4 divisors (see below), whose sum is σ = 161737276080. Its totient is φ = 161507858688.

The previous prime is 161622567377. The next prime is 161622567413. The reversal of 161622567383 is 383765226161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 383765226161 = 2707 ⋅141767723.

It is a cyclic number.

It is not a de Polignac number, because 161622567383 - 2¹⁸ = 161622305239 is a prime.

It is a super-2 number, since 2×161622567383² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161622563383) 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, 57352235 + ... + 57355052.

It is an arithmetic number, because the mean of its divisors is an integer number (40434319020).

Almost surely, 2^161622567383 is an apocalyptic number.

161622567383 is a deficient number, since it is larger than the sum of its proper divisors (114708697).

161622567383 is a wasteful number, since it uses less digits than its factorization.

161622567383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114708696.

The product of its digits is 2177280, while the sum is 50.

The spelling of 161622567383 in words is "one hundred sixty-one billion, six hundred twenty-two million, five hundred sixty-seven thousand, three hundred eighty-three".