72622318487688 has 128 divisors (see below), whose sum is σ = 209907947404800. Its totient is φ = 23245361238528.

The previous prime is 72622318487629. The next prime is 72622318487689. The reversal of 72622318487688 is 88678481322627.

It is a happy number.

72622318487688 is a `hidden beast` number, since 7 + 2 + 62 + 2 + 3 + 1 + 8 + 487 + 6 + 88 = 666.

It is a super-2 number, since 2×72622318487688² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (72622318487689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66947781 + ... + 68023892.

It is an arithmetic number, because the mean of its divisors is an integer number (1639905839100).

Almost surely, 2^{72622318487688} is an apocalyptic number.

It is an amenable number.

72622318487688 is an abundant number, since it is smaller than the sum of its proper divisors (137285628917112).

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

72622318487688 is a wasteful number, since it uses less digits than its factorization.

72622318487688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134971788 (or 134971778 counting only the distinct ones).

The product of its digits is 693633024, while the sum is 72.

The spelling of 72622318487688 in words is "seventy-two trillion, six hundred twenty-two billion, three hundred eighteen million, four hundred eighty-seven thousand, six hundred eighty-eight".