1641112015620 has 288 divisors, whose sum is σ = 5776841355264. Its totient is φ = 340746405120.

The previous prime is 1641112015607. The next prime is 1641112015643. The reversal of 1641112015620 is 265102111461.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 95 ways as a sum of consecutive naturals, for example, 69459129 + ... + 69482751.

It is an arithmetic number, because the mean of its divisors is an integer number (20058476928).

Almost surely, 2^{1641112015620} is an apocalyptic number.

1641112015620 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 1641112015620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2888420677632).

1641112015620 is an abundant number, since it is smaller than the sum of its proper divisors (4135729339644).

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

1641112015620 is a wasteful number, since it uses less digits than its factorization.

1641112015620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25031 (or 25018 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 1641112015620 in words is "one trillion, six hundred forty-one billion, one hundred twelve million, fifteen thousand, six hundred twenty".