8782374530721 has 64 divisors (see below), whose sum is σ = 14240926586880. Its totient is φ = 4744811197440.

The previous prime is 8782374530717. The next prime is 8782374530749. The reversal of 8782374530721 is 1270354732878.

It is not a de Polignac number, because 8782374530721 - 2² = 8782374530717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (8782374530771) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47799196 + ... + 47982578.

It is an arithmetic number, because the mean of its divisors is an integer number (222514477920).

Almost surely, 2^{8782374530721} is an apocalyptic number.

It is an amenable number.

8782374530721 is a deficient number, since it is larger than the sum of its proper divisors (5458552056159).

8782374530721 is a wasteful number, since it uses less digits than its factorization.

8782374530721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187926.

The product of its (nonzero) digits is 15805440, while the sum is 57.

The spelling of 8782374530721 in words is "eight trillion, seven hundred eighty-two billion, three hundred seventy-four million, five hundred thirty thousand, seven hundred twenty-one".