161438687754 has 8 divisors (see below), whose sum is σ = 322877375520. Its totient is φ = 53812895916.

The previous prime is 161438687723. The next prime is 161438687771. The reversal of 161438687754 is 457786834161.

161438687754 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

161438687754 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13453223974 + ... + 13453223985.

It is an arithmetic number, because the mean of its divisors is an integer number (40359671940).

Almost surely, 2^161438687754 is an apocalyptic number.

161438687754 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161438687754 is a wasteful number, since it uses less digits than its factorization.

161438687754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26906447964.

The product of its digits is 27095040, while the sum is 60.

The spelling of 161438687754 in words is "one hundred sixty-one billion, four hundred thirty-eight million, six hundred eighty-seven thousand, seven hundred fifty-four".