1816501408480 has 192 divisors, whose sum is σ = 4752592911360. Its totient is φ = 650551910400.

The previous prime is 1816501408411. The next prime is 1816501408489. The reversal of 1816501408480 is 848041056181.

It is a self number, because there is not a number n which added to its sum of digits gives 1816501408480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816501408489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126077437 + ... + 126091843.

It is an arithmetic number, because the mean of its divisors is an integer number (24753088080).

Almost surely, 2^{1816501408480} is an apocalyptic number.

1816501408480 is a gapful number since it is divisible by the number (10) 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 1816501408480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2376296455680).

1816501408480 is an abundant number, since it is smaller than the sum of its proper divisors (2936091502880).

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

1816501408480 is a wasteful number, since it uses less digits than its factorization.

1816501408480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15513 (or 15505 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 46.

The spelling of 1816501408480 in words is "one trillion, eight hundred sixteen billion, five hundred one million, four hundred eight thousand, four hundred eighty".