161763863464 has 192 divisors, whose sum is σ = 369294336000. Its totient is φ = 66162096000.

The previous prime is 161763863381. The next prime is 161763863473. The reversal of 161763863464 is 464368367161.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 365155227 + ... + 365155669.

It is an arithmetic number, because the mean of its divisors is an integer number (1923408000).

Almost surely, 2^161763863464 is an apocalyptic number.

161763863464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161763863464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184647168000).

161763863464 is an abundant number, since it is smaller than the sum of its proper divisors (207530472536).

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

161763863464 is a wasteful number, since it uses less digits than its factorization.

161763863464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 833 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 55.

The spelling of 161763863464 in words is "one hundred sixty-one billion, seven hundred sixty-three million, eight hundred sixty-three thousand, four hundred sixty-four".