72663011093 has 4 divisors (see below), whose sum is σ = 72671693580. Its totient is φ = 72654328608.

The previous prime is 72663011087. The next prime is 72663011101. The reversal of 72663011093 is 39011036627.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10670476804 + 61992534289 = 103298^2 + 248983^2 .

It is a cyclic number.

It is not a de Polignac number, because 72663011093 - 2³² = 68368043797 is a prime.

It is a super-2 number, since 2×72663011093² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72663011023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4328678 + ... + 4345431.

It is an arithmetic number, because the mean of its divisors is an integer number (18167923395).

Almost surely, 2^72663011093 is an apocalyptic number.

It is an amenable number.

72663011093 is a deficient number, since it is larger than the sum of its proper divisors (8682487).

72663011093 is an equidigital number, since it uses as much as digits as its factorization.

72663011093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8682486.

The product of its (nonzero) digits is 40824, while the sum is 38.

The spelling of 72663011093 in words is "seventy-two billion, six hundred sixty-three million, eleven thousand, ninety-three".