72710621760 has 448 divisors, whose sum is σ = 270369792000. Its totient is φ = 16548747264.

The previous prime is 72710621723. The next prime is 72710621761. The reversal of 72710621760 is 6712601727.

It is a tau number, because it is divible by the number of its divisors (448).

It is not an unprimeable number, because it can be changed into a prime (72710621761) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 144553669 + ... + 144554171.

It is an arithmetic number, because the mean of its divisors is an integer number (603504000).

Almost surely, 2^72710621760 is an apocalyptic number.

72710621760 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72710621760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135184896000).

72710621760 is an abundant number, since it is smaller than the sum of its proper divisors (197659170240).

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

72710621760 is a wasteful number, since it uses less digits than its factorization.

72710621760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 72710621760 in words is "seventy-two billion, seven hundred ten million, six hundred twenty-one thousand, seven hundred sixty".