161317454708 has 12 divisors (see below), whose sum is σ = 292040219940. Its totient is φ = 77877391872.

The previous prime is 161317454693. The next prime is 161317454723. The reversal of 161317454708 is 807454713161.

It is an interprime number because it is at equal distance from previous prime (161317454693) and next prime (161317454723).

It can be written as a sum of positive squares in 2 ways, for example, as 70555046884 + 90762407824 = 265622^2 + 301268^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695333741 + ... + 695333972.

It is an arithmetic number, because the mean of its divisors is an integer number (24336684995).

Almost surely, 2^161317454708 is an apocalyptic number.

It is an amenable number.

161317454708 is a deficient number, since it is larger than the sum of its proper divisors (130722765232).

161317454708 is a wasteful number, since it uses less digits than its factorization.

161317454708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390667746 (or 1390667744 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 161317454708 in words is "one hundred sixty-one billion, three hundred seventeen million, four hundred fifty-four thousand, seven hundred eight".