163674457488 has 320 divisors, whose sum is σ = 507620724480. Its totient is φ = 50307858432.

The previous prime is 163674457487. The next prime is 163674457501. The reversal of 163674457488 is 884754476361.

163674457488 is a `hidden beast` number, since 1 + 6 + 3 + 67 + 44 + 57 + 488 = 666.

It is a Cunningham number, because it is equal to 404567²-1.

It is a super-2 number, since 2×163674457488² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163674457481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87385320 + ... + 87387192.

It is an arithmetic number, because the mean of its divisors is an integer number (1586314764).

Almost surely, 2^163674457488 is an apocalyptic number.

163674457488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163674457488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253810362240).

163674457488 is an abundant number, since it is smaller than the sum of its proper divisors (343946266992).

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

163674457488 is a wasteful number, since it uses less digits than its factorization.

163674457488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2131 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 63.

The spelling of 163674457488 in words is "one hundred sixty-three billion, six hundred seventy-four million, four hundred fifty-seven thousand, four hundred eighty-eight".