72767423652 has 96 divisors (see below), whose sum is σ = 211869471744. Its totient is φ = 18884342400.

The previous prime is 72767423639. The next prime is 72767423653. The reversal of 72767423652 is 25632476727.

It is a junction number, because it is equal to n+sod(n) for n = 72767423595 and 72767423604.

It is not an unprimeable number, because it can be changed into a prime (72767423653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1057903 + ... + 1124585.

It is an arithmetic number, because the mean of its divisors is an integer number (2206973664).

Almost surely, 2^72767423652 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 72767423652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105934735872).

72767423652 is an abundant number, since it is smaller than the sum of its proper divisors (139102048092).

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

72767423652 is a wasteful number, since it uses less digits than its factorization.

72767423652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67889 (or 67887 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 51.

The spelling of 72767423652 in words is "seventy-two billion, seven hundred sixty-seven million, four hundred twenty-three thousand, six hundred fifty-two".