72327771180 has 384 divisors, whose sum is σ = 264217282560. Its totient is φ = 16081182720.

The previous prime is 72327771157. The next prime is 72327771211. The reversal of 72327771180 is 8117772327.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 91902747 + ... + 91903533.

It is an arithmetic number, because the mean of its divisors is an integer number (688065840).

Almost surely, 2^72327771180 is an apocalyptic number.

72327771180 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 72327771180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132108641280).

72327771180 is an abundant number, since it is smaller than the sum of its proper divisors (191889511380).

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

72327771180 is a wasteful number, since it uses less digits than its factorization.

72327771180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 230496, while the sum is 45.

The spelling of 72327771180 in words is "seventy-two billion, three hundred twenty-seven million, seven hundred seventy-one thousand, one hundred eighty".