4203161791920 has 1200 divisors, whose sum is σ = 19250737561440. Its totient is φ = 840130486272.

The previous prime is 4203161791919. The next prime is 4203161791943. The reversal of 4203161791920 is 291971613024.

4203161791920 is a `hidden beast` number, since 4 + 2 + 0 + 3 + 1 + 617 + 9 + 1 + 9 + 20 = 666.

It is a super-2 number, since 2×4203161791920² (a number of 26 digits) contains 22 as substring.

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 239 ways as a sum of consecutive naturals, for example, 78400644 + ... + 78454236.

Almost surely, 2^{4203161791920} is an apocalyptic number.

4203161791920 is a gapful number since it is divisible by the number (40) 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 4203161791920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9625368780720).

4203161791920 is an abundant number, since it is smaller than the sum of its proper divisors (15047575769520).

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

4203161791920 is a wasteful number, since it uses less digits than its factorization.

4203161791920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53664 (or 53642 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 4203161791920 in words is "four trillion, two hundred three billion, one hundred sixty-one million, seven hundred ninety-one thousand, nine hundred twenty".