163251706400 has 72 divisors (see below), whose sum is σ = 398595738240. Its totient is φ = 65291260160.

The previous prime is 163251706391. The next prime is 163251706477. The reversal of 163251706400 is 4607152361.

It is a super-2 number, since 2×163251706400² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8918057 + ... + 8936343.

It is an arithmetic number, because the mean of its divisors is an integer number (5536051920).

Almost surely, 2^163251706400 is an apocalyptic number.

163251706400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163251706400 is an abundant number, since it is smaller than the sum of its proper divisors (235344031840).

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

163251706400 is a wasteful number, since it uses less digits than its factorization.

163251706400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29466 (or 29453 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

Adding to 163251706400 its reverse (4607152361), we get a palindrome (167858858761).

The spelling of 163251706400 in words is "one hundred sixty-three billion, two hundred fifty-one million, seven hundred six thousand, four hundred".