201860043840 has 896 divisors, whose sum is σ = 888710968320. Its totient is φ = 41994878976.

The previous prime is 201860043829. The next prime is 201860043871. The reversal of 201860043840 is 48340068102.

201860043840 is a `hidden beast` number, since 2 + 0 + 1 + 8 + 600 + 4 + 3 + 8 + 40 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 201860043795 and 201860043804.

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, 57393762 + ... + 57397278.

It is an arithmetic number, because the mean of its divisors is an integer number (991864920).

Almost surely, 2^201860043840 is an apocalyptic number.

201860043840 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 201860043840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444355484160).

201860043840 is an abundant number, since it is smaller than the sum of its proper divisors (686850924480).

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

201860043840 is a wasteful number, since it uses less digits than its factorization.

201860043840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 3620 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 201860043840 in words is "two hundred one billion, eight hundred sixty million, forty-three thousand, eight hundred forty".