161466316640 has 48 divisors (see below), whose sum is σ = 384467876352. Its totient is φ = 64077963264.

The previous prime is 161466316633. The next prime is 161466316663. The reversal of 161466316640 is 46613664161.

It is a junction number, because it is equal to n+sod(n) for n = 161466316591 and 161466316600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3952769 + ... + 3993408.

It is an arithmetic number, because the mean of its divisors is an integer number (8009747424).

Almost surely, 2^161466316640 is an apocalyptic number.

161466316640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161466316640 is an abundant number, since it is smaller than the sum of its proper divisors (223001559712).

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

161466316640 is a wasteful number, since it uses less digits than its factorization.

161466316640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7946319 (or 7946311 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 161466316640 in words is "one hundred sixty-one billion, four hundred sixty-six million, three hundred sixteen thousand, six hundred forty".