72278448267 has 16 divisors (see below), whose sum is σ = 100754385408. Its totient is φ = 46002116160.

The previous prime is 72278448251. The next prime is 72278448287. The reversal of 72278448267 is 76284487227.

It is not a de Polignac number, because 72278448267 - 2⁴ = 72278448251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72278448227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 969343 + ... + 1041240.

It is an arithmetic number, because the mean of its divisors is an integer number (6297149088).

Almost surely, 2^72278448267 is an apocalyptic number.

72278448267 is a deficient number, since it is larger than the sum of its proper divisors (28475937141).

72278448267 is a wasteful number, since it uses less digits than its factorization.

72278448267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2011130.

The product of its digits is 16859136, while the sum is 57.

The spelling of 72278448267 in words is "seventy-two billion, two hundred seventy-eight million, four hundred forty-eight thousand, two hundred sixty-seven".