163321463725 has 96 divisors (see below), whose sum is σ = 254213372160. Its totient is φ = 101536727040.

The previous prime is 163321463707. The next prime is 163321463731. The reversal of 163321463725 is 527364123361.

It is not a de Polignac number, because 163321463725 - 2⁵ = 163321463693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9329781 + ... + 9347269.

It is an arithmetic number, because the mean of its divisors is an integer number (2648055960).

Almost surely, 2^163321463725 is an apocalyptic number.

It is an amenable number.

163321463725 is a deficient number, since it is larger than the sum of its proper divisors (90891908435).

163321463725 is a wasteful number, since it uses less digits than its factorization.

163321463725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17639 (or 17634 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The spelling of 163321463725 in words is "one hundred sixty-three billion, three hundred twenty-one million, four hundred sixty-three thousand, seven hundred twenty-five".