72178728358 has 16 divisors (see below), whose sum is σ = 118488008016. Its totient is φ = 32703690240.

The previous prime is 72178728287. The next prime is 72178728373. The reversal of 72178728358 is 85382787127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234091 + ... + 5247862.

It is an arithmetic number, because the mean of its divisors is an integer number (7405500501).

Almost surely, 2^72178728358 is an apocalyptic number.

72178728358 is a deficient number, since it is larger than the sum of its proper divisors (46309279658).

72178728358 is a wasteful number, since it uses less digits than its factorization.

72178728358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10482279.

The product of its digits is 10536960, while the sum is 58.

The spelling of 72178728358 in words is "seventy-two billion, one hundred seventy-eight million, seven hundred twenty-eight thousand, three hundred fifty-eight".