3561623340 has 192 divisors, whose sum is σ = 11697315840. Its totient is φ = 800444160.

The previous prime is 3561623327. The next prime is 3561623357. The reversal of 3561623340 is 433261653.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 586359 + ... + 592401.

It is an arithmetic number, because the mean of its divisors is an integer number (60923520).

Almost surely, 2^3561623340 is an apocalyptic number.

3561623340 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 3561623340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5848657920).

3561623340 is an abundant number, since it is smaller than the sum of its proper divisors (8135692500).

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

3561623340 is a wasteful number, since it uses less digits than its factorization.

3561623340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132 (or 6130 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 3561623340 is about 59679.3376303725. The cubic root of 3561623340 is about 1527.1533982152.

Adding to 3561623340 its reverse (433261653), we get a palindrome (3994884993).

The spelling of 3561623340 in words is "three billion, five hundred sixty-one million, six hundred twenty-three thousand, three hundred forty".