161216224316464 has 80 divisors (see below), whose sum is σ = 314724077307360. Its totient is φ = 79998384660480.

The previous prime is 161216224316437. The next prime is 161216224316491. The reversal of 161216224316464 is 464613422612161.

It is an interprime number because it is at equal distance from previous prime (161216224316437) and next prime (161216224316491).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17827732327 + ... + 17827741369.

It is an arithmetic number, because the mean of its divisors is an integer number (3934050966342).

Almost surely, 2^{161216224316464} is an apocalyptic number.

It is an amenable number.

161216224316464 is a deficient number, since it is larger than the sum of its proper divisors (153507852990896).

161216224316464 is a wasteful number, since it uses less digits than its factorization.

161216224316464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16958 (or 16952 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The spelling of 161216224316464 in words is "one hundred sixty-one trillion, two hundred sixteen billion, two hundred twenty-four million, three hundred sixteen thousand, four hundred sixty-four".