1623663221760 has 2640 divisors, whose sum is σ = 7007838013440. Its totient is φ = 357362565120.

The previous prime is 1623663221699. The next prime is 1623663221767. The reversal of 1623663221760 is 671223663261.

1623663221760 is a `hidden beast` number, since 1 + 6 + 2 + 3 + 6 + 632 + 2 + 1 + 7 + 6 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623663221767) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 52376232945 + ... + 52376232975.

It is an arithmetic number, because the mean of its divisors is an integer number (2654484096).

Almost surely, 2^{1623663221760} is an apocalyptic number.

1623663221760 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 1623663221760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3503919006720).

1623663221760 is an abundant number, since it is smaller than the sum of its proper divisors (5384174791680).

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

1623663221760 is a wasteful number, since it uses less digits than its factorization.

1623663221760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 1623663221760 in words is "one trillion, six hundred twenty-three billion, six hundred sixty-three million, two hundred twenty-one thousand, seven hundred sixty".