2781064464 has 20 divisors (see below), whose sum is σ = 7184416656. Its totient is φ = 927021472.

The previous prime is 2781064453. The next prime is 2781064469. The reversal of 2781064464 is 4644601872.

It is not an unprimeable number, because it can be changed into a prime (2781064469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28969374 + ... + 28969469.

Almost surely, 2^2781064464 is an apocalyptic number.

2781064464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2781064464 is an abundant number, since it is smaller than the sum of its proper divisors (4403352192).

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

2781064464 is a wasteful number, since it uses less digits than its factorization.

2781064464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57938854 (or 57938848 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 2781064464 is about 52735.7986950041. The cubic root of 2781064464 is about 1406.2753100195.

The spelling of 2781064464 in words is "two billion, seven hundred eighty-one million, sixty-four thousand, four hundred sixty-four".