161484774162431 has 4 divisors (see below), whose sum is σ = 168505851299952. Its totient is φ = 154463697024912.

The previous prime is 161484774162427. The next prime is 161484774162433. The reversal of 161484774162431 is 134261477484161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161484774162431 - 2² = 161484774162427 is a prime.

It is a super-2 number, since 2×161484774162431² (a number of 29 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 (161484774162433) 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, 3510538568726 + ... + 3510538568771.

It is an arithmetic number, because the mean of its divisors is an integer number (42126462824988).

Almost surely, 2^{161484774162431} is an apocalyptic number.

161484774162431 is a deficient number, since it is larger than the sum of its proper divisors (7021077137521).

161484774162431 is an equidigital number, since it uses as much as digits as its factorization.

161484774162431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7021077137520.

The product of its digits is 21676032, while the sum is 59.

The spelling of 161484774162431 in words is "one hundred sixty-one trillion, four hundred eighty-four billion, seven hundred seventy-four million, one hundred sixty-two thousand, four hundred thirty-one".