161622667464 has 32 divisors (see below), whose sum is σ = 404067945120. Its totient is φ = 53872718976.

The previous prime is 161622667411. The next prime is 161622667469. The reversal of 161622667464 is 464766226161.

161622667464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161622667464² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161622667469) 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, 1086612 + ... + 1226364.

It is an arithmetic number, because the mean of its divisors is an integer number (12627123285).

Almost surely, 2^161622667464 is an apocalyptic number.

It is an amenable number.

161622667464 is an abundant number, since it is smaller than the sum of its proper divisors (242445277656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161622667464 is a wasteful number, since it uses less digits than its factorization.

161622667464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187949 (or 187945 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

The spelling of 161622667464 in words is "one hundred sixty-one billion, six hundred twenty-two million, six hundred sixty-seven thousand, four hundred sixty-four".