163772421340 has 24 divisors (see below), whose sum is σ = 375187729392. Its totient is φ = 59553607680.

The previous prime is 163772421313. The next prime is 163772421347. The reversal of 163772421340 is 43124277361.

163772421340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 163772421293 and 163772421302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163772421347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 372209829 + ... + 372210268.

It is an arithmetic number, because the mean of its divisors is an integer number (15632822058).

Almost surely, 2^163772421340 is an apocalyptic number.

163772421340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163772421340 is an abundant number, since it is smaller than the sum of its proper divisors (211415308052).

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

163772421340 is a wasteful number, since it uses less digits than its factorization.

163772421340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744420117 (or 744420115 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 163772421340 in words is "one hundred sixty-three billion, seven hundred seventy-two million, four hundred twenty-one thousand, three hundred forty".