10003545020 has 144 divisors (see below), whose sum is σ = 25593200640. Its totient is φ = 3268653696.

The previous prime is 10003545007. The next prime is 10003545053. The reversal of 10003545020 is 2054530001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 10003544983 and 10003545001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7820741 + ... + 7822019.

It is an arithmetic number, because the mean of its divisors is an integer number (177730560).

Almost surely, 2^10003545020 is an apocalyptic number.

10003545020 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 10003545020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12796600320).

10003545020 is an abundant number, since it is smaller than the sum of its proper divisors (15589655620).

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

10003545020 is a wasteful number, since it uses less digits than its factorization.

10003545020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1663 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The spelling of 10003545020 in words is "ten billion, three million, five hundred forty-five thousand, twenty".