163620413253 has 24 divisors (see below), whose sum is σ = 269035940160. Its totient is φ = 94852412160.

The previous prime is 163620413233. The next prime is 163620413261. The reversal of 163620413253 is 352314026361.

163620413253 is a `hidden beast` number, since 1 + 6 + 3 + 620 + 4 + 1 + 3 + 25 + 3 = 666.

It is not a de Polignac number, because 163620413253 - 2¹² = 163620409157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163620413233) 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 23 ways as a sum of consecutive naturals, for example, 35926668 + ... + 35931221.

It is an arithmetic number, because the mean of its divisors is an integer number (11209830840).

Almost surely, 2^163620413253 is an apocalyptic number.

It is an amenable number.

163620413253 is a deficient number, since it is larger than the sum of its proper divisors (105415526907).

163620413253 is a wasteful number, since it uses less digits than its factorization.

163620413253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71857929 (or 71857926 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 163620413253 in words is "one hundred sixty-three billion, six hundred twenty million, four hundred thirteen thousand, two hundred fifty-three".