16168152420 has 240 divisors, whose sum is σ = 58762881408. Its totient is φ = 3644766720.

The previous prime is 16168152383. The next prime is 16168152431. The reversal of 16168152420 is 2425186161.

It is a happy number.

16168152420 is a `hidden beast` number, since 1 + 616 + 8 + 15 + 2 + 4 + 20 = 666.

It is a super-2 number, since 2×16168152420² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 818055 + ... + 837585.

Almost surely, 2^16168152420 is an apocalyptic number.

16168152420 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 16168152420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29381440704).

16168152420 is an abundant number, since it is smaller than the sum of its proper divisors (42594728988).

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

16168152420 is a wasteful number, since it uses less digits than its factorization.

16168152420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19632 (or 19621 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 16168152420 in words is "sixteen billion, one hundred sixty-eight million, one hundred fifty-two thousand, four hundred twenty".