72247773078 has 48 divisors (see below), whose sum is σ = 168633855936. Its totient is φ = 22222736640.

The previous prime is 72247773077. The next prime is 72247773083. The reversal of 72247773078 is 87037774227.

72247773078 is a `hidden beast` number, since 72 + 2 + 477 + 7 + 30 + 78 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72247773077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 680851 + ... + 779777.

It is an arithmetic number, because the mean of its divisors is an integer number (3513205332).

Almost surely, 2^72247773078 is an apocalyptic number.

72247773078 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

72247773078 is an abundant number, since it is smaller than the sum of its proper divisors (96386082858).

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

72247773078 is a wasteful number, since it uses less digits than its factorization.

72247773078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102069 (or 102066 counting only the distinct ones).

The product of its (nonzero) digits is 6453888, while the sum is 54.

The spelling of 72247773078 in words is "seventy-two billion, two hundred forty-seven million, seven hundred seventy-three thousand, seventy-eight".