220339491840 has 1232 divisors, whose sum is σ = 902107987200. Its totient is φ = 51167821824.

The previous prime is 220339491839. The next prime is 220339491863. The reversal of 220339491840 is 48194933022.

220339491840 is a `hidden beast` number, since 2 + 203 + 394 + 9 + 18 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 921922441 + ... + 921922679.

Almost surely, 2^220339491840 is an apocalyptic number.

220339491840 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 220339491840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451053993600).

220339491840 is an abundant number, since it is smaller than the sum of its proper divisors (681768495360).

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

220339491840 is a wasteful number, since it uses less digits than its factorization.

220339491840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 220339491840 in words is "two hundred twenty billion, three hundred thirty-nine million, four hundred ninety-one thousand, eight hundred forty".