2781530824932 has 72 divisors (see below), whose sum is σ = 7132767183360. Its totient is φ = 913778893440.

The previous prime is 2781530824921. The next prime is 2781530825041. The reversal of 2781530824932 is 2394280351872.

2781530824932 is a `hidden beast` number, since 2 + 7 + 81 + 530 + 8 + 24 + 9 + 3 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6733869 + ... + 7134987.

It is an arithmetic number, because the mean of its divisors is an integer number (99066210880).

Almost surely, 2^{2781530824932} 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 2781530824932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3566383591680).

2781530824932 is an abundant number, since it is smaller than the sum of its proper divisors (4351236358428).

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

2781530824932 is a wasteful number, since it uses less digits than its factorization.

2781530824932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403913 (or 403908 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 2781530824932 in words is "two trillion, seven hundred eighty-one billion, five hundred thirty million, eight hundred twenty-four thousand, nine hundred thirty-two".