1620682850280 has 128 divisors (see below), whose sum is σ = 5237326886400. Its totient is φ = 398840205312.

The previous prime is 1620682850261. The next prime is 1620682850393. The reversal of 1620682850280 is 820582860261.

It is a happy number.

It is a super-2 number, since 2×1620682850280² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6391761 + ... + 6640479.

It is an arithmetic number, because the mean of its divisors is an integer number (40916616300).

Almost surely, 2^{1620682850280} is an apocalyptic number.

1620682850280 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 1620682850280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2618663443200).

1620682850280 is an abundant number, since it is smaller than the sum of its proper divisors (3616644036120).

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

1620682850280 is a wasteful number, since it uses less digits than its factorization.

1620682850280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252923 (or 252919 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 1620682850280 in words is "one trillion, six hundred twenty billion, six hundred eighty-two million, eight hundred fifty thousand, two hundred eighty".