78964648272 has 60 divisors (see below), whose sum is σ = 225161011764. Its totient is φ = 25824913920.

The previous prime is 78964648249. The next prime is 78964648277. The reversal of 78964648272 is 27284646987.

78964648272 is a `hidden beast` number, since 7 + 8 + 96 + 464 + 82 + 7 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22727371536 + 56237276736 = 150756^2 + 237144^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78964648277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5165629 + ... + 5180892.

Almost surely, 2^78964648272 is an apocalyptic number.

78964648272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

78964648272 is an abundant number, since it is smaller than the sum of its proper divisors (146196363492).

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

78964648272 is a wasteful number, since it uses less digits than its factorization.

78964648272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10346588 (or 10346579 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 78964648272 in words is "seventy-eight billion, nine hundred sixty-four million, six hundred forty-eight thousand, two hundred seventy-two".