2043021017620 has 144 divisors (see below), whose sum is σ = 5098201879680. Its totient is φ = 684793232640.

The previous prime is 2043021017617. The next prime is 2043021017629. The reversal of 2043021017620 is 267101203402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043021017629) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1100817 + ... + 2301703.

It is an arithmetic number, because the mean of its divisors is an integer number (35404179720).

Almost surely, 2^{2043021017620} is an apocalyptic number.

2043021017620 is a gapful number since it is divisible by the number (20) 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 2043021017620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2549100939840).

2043021017620 is an abundant number, since it is smaller than the sum of its proper divisors (3055180862060).

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

2043021017620 is a wasteful number, since it uses less digits than its factorization.

2043021017620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200974 (or 1200961 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 2043021017620 in words is "two trillion, forty-three billion, twenty-one million, seventeen thousand, six hundred twenty".