72213420234 has 16 divisors (see below), whose sum is σ = 145312896672. Its totient is φ = 23923464048.

The previous prime is 72213420193. The next prime is 72213420263. The reversal of 72213420234 is 43202431227.

It is a super-2 number, since 2×72213420234² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36917949 + ... + 36919904.

It is an arithmetic number, because the mean of its divisors is an integer number (9082056042).

Almost surely, 2^72213420234 is an apocalyptic number.

72213420234 is an abundant number, since it is smaller than the sum of its proper divisors (73099476438).

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

72213420234 is a wasteful number, since it uses less digits than its factorization.

72213420234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73838021.

The product of its (nonzero) digits is 16128, while the sum is 30.

The spelling of 72213420234 in words is "seventy-two billion, two hundred thirteen million, four hundred twenty thousand, two hundred thirty-four".