72544520534 has 8 divisors (see below), whose sum is σ = 108906198408. Its totient is φ = 36242454400.

The previous prime is 72544520533. The next prime is 72544520561. The reversal of 72544520534 is 43502544527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72544520491 and 72544520500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72544520533) 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, 14899892 + ... + 14904759.

It is an arithmetic number, because the mean of its divisors is an integer number (13613274801).

Almost surely, 2^72544520534 is an apocalyptic number.

72544520534 is a deficient number, since it is larger than the sum of its proper divisors (36361677874).

72544520534 is a wasteful number, since it uses less digits than its factorization.

72544520534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29805870.

The product of its (nonzero) digits is 672000, while the sum is 41.

The spelling of 72544520534 in words is "seventy-two billion, five hundred forty-four million, five hundred twenty thousand, five hundred thirty-four".