169621620480 has 1152 divisors, whose sum is σ = 675795456000. Its totient is φ = 40525774848.

The previous prime is 169621620479. The next prime is 169621620499. The reversal of 169621620480 is 84026126961.

169621620480 is a `hidden beast` number, since 1 + 6 + 9 + 6 + 2 + 162 + 0 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a super-2 number, since 2×169621620480² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2147109081 + ... + 2147109159.

It is an arithmetic number, because the mean of its divisors is an integer number (586628000).

Almost surely, 2^169621620480 is an apocalyptic number.

169621620480 is a gapful number since it is divisible by the number (10) 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 169621620480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337897728000).

169621620480 is an abundant number, since it is smaller than the sum of its proper divisors (506173835520).

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

169621620480 is an frugal number, since it uses more digits than its factorization.

169621620480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 169621620480 in words is "one hundred sixty-nine billion, six hundred twenty-one million, six hundred twenty thousand, four hundred eighty".