72278220207 has 16 divisors (see below), whose sum is σ = 104184824960. Its totient is φ = 44415633312.

The previous prime is 72278220143. The next prime is 72278220253. The reversal of 72278220207 is 70202287227.

It is not a de Polignac number, because 72278220207 - 2⁶ = 72278220143 is a prime.

It is a super-2 number, since 2×72278220207² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72278220257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17133553 + ... + 17137770.

It is an arithmetic number, because the mean of its divisors is an integer number (6511551560).

Almost surely, 2^72278220207 is an apocalyptic number.

72278220207 is a deficient number, since it is larger than the sum of its proper divisors (31906604753).

72278220207 is a wasteful number, since it uses less digits than its factorization.

72278220207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34271382.

The product of its (nonzero) digits is 87808, while the sum is 39.

The spelling of 72278220207 in words is "seventy-two billion, two hundred seventy-eight million, two hundred twenty thousand, two hundred seven".