3544561020 has 288 divisors, whose sum is σ = 13565131776. Its totient is φ = 679795200.

The previous prime is 3544561003. The next prime is 3544561037. The reversal of 3544561020 is 201654453.

It is an interprime number because it is at equal distance from previous prime (3544561003) and next prime (3544561037).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 416205 + ... + 424635.

It is an arithmetic number, because the mean of its divisors is an integer number (47101152).

Almost surely, 2^3544561020 is an apocalyptic number.

3544561020 is a gapful number since it is divisible by the number (30) 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 3544561020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6782565888).

3544561020 is an abundant number, since it is smaller than the sum of its proper divisors (10020570756).

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

3544561020 is a wasteful number, since it uses less digits than its factorization.

3544561020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481 (or 8472 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 3544561020 is about 59536.2160369636. The cubic root of 3544561020 is about 1524.7108322095.

The spelling of 3544561020 in words is "three billion, five hundred forty-four million, five hundred sixty-one thousand, twenty".