72127105978 has 8 divisors (see below), whose sum is σ = 111680680320. Its totient is φ = 34900212540.

The previous prime is 72127105961. The next prime is 72127105979. The reversal of 72127105978 is 87950172127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (72127105979) 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, 581670148 + ... + 581670271.

It is an arithmetic number, because the mean of its divisors is an integer number (13960085040).

Almost surely, 2^72127105978 is an apocalyptic number.

72127105978 is a deficient number, since it is larger than the sum of its proper divisors (39553574342).

72127105978 is a wasteful number, since it uses less digits than its factorization.

72127105978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163340452.

The product of its (nonzero) digits is 493920, while the sum is 49.

The spelling of 72127105978 in words is "seventy-two billion, one hundred twenty-seven million, one hundred five thousand, nine hundred seventy-eight".