72672664063 has 4 divisors (see below), whose sum is σ = 72696239208. Its totient is φ = 72649088920.

The previous prime is 72672664039. The next prime is 72672664067. The reversal of 72672664063 is 36046627627.

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

It is a cyclic number.

It is not a de Polignac number, because 72672664063 - 2²¹ = 72670566911 is a prime.

It is a super-2 number, since 2×72672664063² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72672663998 and 72672664016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72672664067) 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, 11782948 + ... + 11789113.

It is an arithmetic number, because the mean of its divisors is an integer number (18174059802).

Almost surely, 2^72672664063 is an apocalyptic number.

72672664063 is a deficient number, since it is larger than the sum of its proper divisors (23575145).

72672664063 is a wasteful number, since it uses less digits than its factorization.

72672664063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23575144.

The product of its (nonzero) digits is 3048192, while the sum is 49.

The spelling of 72672664063 in words is "seventy-two billion, six hundred seventy-two million, six hundred sixty-four thousand, sixty-three".