163597487421 has 32 divisors (see below), whose sum is σ = 232738513920. Its totient is φ = 101861432064.

The previous prime is 163597487413. The next prime is 163597487423. The reversal of 163597487421 is 124784795361.

It is not a de Polignac number, because 163597487421 - 2³ = 163597487413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163597487423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5463336 + ... + 5493198.

It is an arithmetic number, because the mean of its divisors is an integer number (7273078560).

Almost surely, 2^163597487421 is an apocalyptic number.

It is an amenable number.

163597487421 is a deficient number, since it is larger than the sum of its proper divisors (69141026499).

163597487421 is a wasteful number, since it uses less digits than its factorization.

163597487421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30705.

The product of its digits is 10160640, while the sum is 57.

The spelling of 163597487421 in words is "one hundred sixty-three billion, five hundred ninety-seven million, four hundred eighty-seven thousand, four hundred twenty-one".