163620546540 has 96 divisors (see below), whose sum is σ = 506825786880. Its totient is φ = 39106905600.

The previous prime is 163620546539. The next prime is 163620546541. The reversal of 163620546540 is 45645026361.

163620546540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (163620546539) and next prime (163620546541).

It is a junction number, because it is equal to n+sod(n) for n = 163620546492 and 163620546501.

It is not an unprimeable number, because it can be changed into a prime (163620546541) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1698985 + ... + 1792704.

It is an arithmetic number, because the mean of its divisors is an integer number (5279435280).

Almost surely, 2^163620546540 is an apocalyptic number.

163620546540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163620546540 is an abundant number, since it is smaller than the sum of its proper divisors (343205240340).

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

163620546540 is a wasteful number, since it uses less digits than its factorization.

163620546540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491783 (or 3491781 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 163620546540 in words is "one hundred sixty-three billion, six hundred twenty million, five hundred forty-six thousand, five hundred forty".