72861832560 has 160 divisors (see below), whose sum is σ = 246525078528. Its totient is φ = 17654901760.

The previous prime is 72861832553. The next prime is 72861832577. The reversal of 72861832560 is 6523816827.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6708094 + ... + 6718946.

Almost surely, 2^72861832560 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 72861832560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123262539264).

72861832560 is an abundant number, since it is smaller than the sum of its proper divisors (173663245968).

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

72861832560 is a wasteful number, since it uses less digits than its factorization.

72861832560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13423 (or 13417 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 72861832560 in words is "seventy-two billion, eight hundred sixty-one million, eight hundred thirty-two thousand, five hundred sixty".