72059857655 has 8 divisors (see below), whose sum is σ = 86569986384. Its totient is φ = 57582448000.

The previous prime is 72059857651. The next prime is 72059857673. The reversal of 72059857655 is 55675895027.

It is a happy number.

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

It is not a de Polignac number, because 72059857655 - 2² = 72059857651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72059857594 and 72059857603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72059857651) 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 7 ways as a sum of consecutive naturals, for example, 8174921 + ... + 8183730.

It is an arithmetic number, because the mean of its divisors is an integer number (10821248298).

Almost surely, 2^72059857655 is an apocalyptic number.

72059857655 is a deficient number, since it is larger than the sum of its proper divisors (14510128729).

72059857655 is a wasteful number, since it uses less digits than its factorization.

72059857655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16359537.

The product of its (nonzero) digits is 26460000, while the sum is 59.

The spelling of 72059857655 in words is "seventy-two billion, fifty-nine million, eight hundred fifty-seven thousand, six hundred fifty-five".