87444427620 has 288 divisors, whose sum is σ = 291602070144. Its totient is φ = 19486494720.

The previous prime is 87444427619. The next prime is 87444427667. The reversal of 87444427620 is 2672444478.

It is a self number, because there is not a number n which added to its sum of digits gives 87444427620.

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, 5298822 + ... + 5315298.

It is an arithmetic number, because the mean of its divisors is an integer number (1012507188).

Almost surely, 2^87444427620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87444427620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145801035072).

87444427620 is an abundant number, since it is smaller than the sum of its proper divisors (204157642524).

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

87444427620 is a wasteful number, since it uses less digits than its factorization.

87444427620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16571 (or 16558 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 48.

The spelling of 87444427620 in words is "eighty-seven billion, four hundred forty-four million, four hundred twenty-seven thousand, six hundred twenty".