161488788378 has 32 divisors (see below), whose sum is σ = 323645037696. Its totient is φ = 53718432768.

The previous prime is 161488788323. The next prime is 161488788427. The reversal of 161488788378 is 873887884161.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9590875 + ... + 9607697.

It is an arithmetic number, because the mean of its divisors is an integer number (10113907428).

Almost surely, 2^161488788378 is an apocalyptic number.

161488788378 is an abundant number, since it is smaller than the sum of its proper divisors (162156249318).

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

161488788378 is a wasteful number, since it uses less digits than its factorization.

161488788378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20038.

The product of its digits is 115605504, while the sum is 69.

The spelling of 161488788378 in words is "one hundred sixty-one billion, four hundred eighty-eight million, seven hundred eighty-eight thousand, three hundred seventy-eight".