20034473643408 has 160 divisors (see below), whose sum is σ = 62275183498240. Its totient is φ = 5421762501120.

The previous prime is 20034473643397. The next prime is 20034473643491. The reversal of 20034473643408 is 80434637443002.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31328943 + ... + 31962033.

It is an arithmetic number, because the mean of its divisors is an integer number (389219896864).

Almost surely, 2^{20034473643408} is an apocalyptic number.

20034473643408 is a gapful number since it is divisible by the number (28) 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 20034473643408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31137591749120).

20034473643408 is an abundant number, since it is smaller than the sum of its proper divisors (42240709854832).

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

20034473643408 is a wasteful number, since it uses less digits than its factorization.

20034473643408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638085 (or 638079 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 48.

The spelling of 20034473643408 in words is "twenty trillion, thirty-four billion, four hundred seventy-three million, six hundred forty-three thousand, four hundred eight".