72126836736 has 104 divisors (see below), whose sum is σ = 195945102000. Its totient is φ = 23588438016.

The previous prime is 72126836713. The next prime is 72126836737. The reversal of 72126836736 is 63763862127.

It is not an unprimeable number, because it can be changed into a prime (72126836737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595890 + ... + 706638.

Almost surely, 2^72126836736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72126836736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97972551000).

72126836736 is an abundant number, since it is smaller than the sum of its proper divisors (123818265264).

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

72126836736 is a wasteful number, since it uses less digits than its factorization.

72126836736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110829 (or 110807 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The spelling of 72126836736 in words is "seventy-two billion, one hundred twenty-six million, eight hundred thirty-six thousand, seven hundred thirty-six".