72019697756 has 24 divisors (see below), whose sum is σ = 129056573184. Its totient is φ = 35147574000.

The previous prime is 72019697731. The next prime is 72019697773. The reversal of 72019697756 is 65779691027.

It is a junction number, because it is equal to n+sod(n) for n = 72019697695 and 72019697704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97631 + ... + 391881.

It is an arithmetic number, because the mean of its divisors is an integer number (5377357216).

Almost surely, 2^72019697756 is an apocalyptic number.

It is an amenable number.

72019697756 is a deficient number, since it is larger than the sum of its proper divisors (57036875428).

72019697756 is a wasteful number, since it uses less digits than its factorization.

72019697756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295721 (or 295719 counting only the distinct ones).

The product of its (nonzero) digits is 10001880, while the sum is 59.

The spelling of 72019697756 in words is "seventy-two billion, nineteen million, six hundred ninety-seven thousand, seven hundred fifty-six".