20423478620160 has 2496 divisors, whose sum is σ = 92325156618240. Its totient is φ = 4207132016640.

The previous prime is 20423478620119. The next prime is 20423478620231. The reversal of 20423478620160 is 6102687432402.

It is a happy number.

20423478620160 is a `hidden beast` number, since 2 + 0 + 4 + 2 + 3 + 4 + 7 + 8 + 620 + 16 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 85453885321 + ... + 85453885559.

It is an arithmetic number, because the mean of its divisors is an integer number (36989245440).

Almost surely, 2^{20423478620160} is an apocalyptic number.

20423478620160 is a gapful number since it is divisible by the number (20) 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 20423478620160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46162578309120).

20423478620160 is an abundant number, since it is smaller than the sum of its proper divisors (71901677998080).

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

20423478620160 is a wasteful number, since it uses less digits than its factorization.

20423478620160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 20423478620160 in words is "twenty trillion, four hundred twenty-three billion, four hundred seventy-eight million, six hundred twenty thousand, one hundred sixty".