1620488572560 has 800 divisors, whose sum is σ = 6960230766720. Its totient is φ = 343537459200.

The previous prime is 1620488572543. The next prime is 1620488572627. The reversal of 1620488572560 is 652758840261.

1620488572560 is a `hidden beast` number, since 1 + 6 + 2 + 0 + 4 + 8 + 8 + 5 + 72 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1620488572497 and 1620488572506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 17560140 + ... + 17652180.

Almost surely, 2^{1620488572560} is an apocalyptic number.

1620488572560 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 1620488572560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3480115383360).

1620488572560 is an abundant number, since it is smaller than the sum of its proper divisors (5339742194160).

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

1620488572560 is a wasteful number, since it uses less digits than its factorization.

1620488572560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92109 (or 92094 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 1620488572560 in words is "one trillion, six hundred twenty billion, four hundred eighty-eight million, five hundred seventy-two thousand, five hundred sixty".