72123650524 has 12 divisors (see below), whose sum is σ = 129627642424. Its totient is φ = 35087181264.

The previous prime is 72123650483. The next prime is 72123650527. The reversal of 72123650524 is 42505632127.

It is a super-3 number, since 3×72123650524³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72123650527) 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 3 ways as a sum of consecutive naturals, for example, 243660834 + ... + 243661129.

Almost surely, 2^72123650524 is an apocalyptic number.

72123650524 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

72123650524 is a deficient number, since it is larger than the sum of its proper divisors (57503991900).

72123650524 is a wasteful number, since it uses less digits than its factorization.

72123650524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487322004 (or 487322002 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 72123650524 in words is "seventy-two billion, one hundred twenty-three million, six hundred fifty thousand, five hundred twenty-four".