72838226247 has 4 divisors (see below), whose sum is σ = 97117635000. Its totient is φ = 48558817496.

The previous prime is 72838226243. The next prime is 72838226273. The reversal of 72838226247 is 74262283827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72838226247 - 2² = 72838226243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72838226247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72838226243) 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, 12139704372 + ... + 12139704377.

It is an arithmetic number, because the mean of its divisors is an integer number (24279408750).

Almost surely, 2^72838226247 is an apocalyptic number.

72838226247 is a deficient number, since it is larger than the sum of its proper divisors (24279408753).

72838226247 is a wasteful number, since it uses less digits than its factorization.

72838226247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24279408752.

The product of its digits is 3612672, while the sum is 51.

The spelling of 72838226247 in words is "seventy-two billion, eight hundred thirty-eight million, two hundred twenty-six thousand, two hundred forty-seven".