72782800784 has 10 divisors (see below), whose sum is σ = 141016676550. Its totient is φ = 36391400384.

The previous prime is 72782800781. The next prime is 72782800799. The reversal of 72782800784 is 48700828727.

It can be written as a sum of positive squares in only one way, i.e., 72322269184 + 460531600 = 268928^2 + 21460^2 .

It is not an unprimeable number, because it can be changed into a prime (72782800781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2274462509 + ... + 2274462540.

It is an arithmetic number, because the mean of its divisors is an integer number (14101667655).

Almost surely, 2^72782800784 is an apocalyptic number.

It is an amenable number.

72782800784 is a deficient number, since it is larger than the sum of its proper divisors (68233875766).

72782800784 is a wasteful number, since it uses less digits than its factorization.

72782800784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548925057 (or 4548925051 counting only the distinct ones).

The product of its (nonzero) digits is 2809856, while the sum is 53.

The spelling of 72782800784 in words is "seventy-two billion, seven hundred eighty-two million, eight hundred thousand, seven hundred eighty-four".