72061233888 has 48 divisors (see below), whose sum is σ = 216183703680. Its totient is φ = 20588923776.

The previous prime is 72061233841. The next prime is 72061233913. The reversal of 72061233888 is 88833216027.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×72061233888² (a number of 23 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53616318 + ... + 53617661.

It is an arithmetic number, because the mean of its divisors is an integer number (4503827160).

Almost surely, 2^72061233888 is an apocalyptic number.

It is an amenable number.

72061233888 is an abundant number, since it is smaller than the sum of its proper divisors (144122469792).

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

72061233888 is a wasteful number, since it uses less digits than its factorization.

72061233888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107233999 (or 107233991 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 72061233888 in words is "seventy-two billion, sixty-one million, two hundred thirty-three thousand, eight hundred eighty-eight".