72021735339 has 8 divisors (see below), whose sum is σ = 101677744080. Its totient is φ = 45190108416.

The previous prime is 72021735337. The next prime is 72021735353. The reversal of 72021735339 is 93353712027.

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

It is not a de Polignac number, because 72021735339 - 2¹ = 72021735337 is a prime.

It is a super-2 number, since 2×72021735339² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72021735339.

It is not an unprimeable number, because it can be changed into a prime (72021735337) 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, 706095394 + ... + 706095495.

It is an arithmetic number, because the mean of its divisors is an integer number (12709718010).

Almost surely, 2^72021735339 is an apocalyptic number.

72021735339 is a deficient number, since it is larger than the sum of its proper divisors (29656008741).

72021735339 is a wasteful number, since it uses less digits than its factorization.

72021735339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412190909.

The product of its (nonzero) digits is 238140, while the sum is 42.

The spelling of 72021735339 in words is "seventy-two billion, twenty-one million, seven hundred thirty-five thousand, three hundred thirty-nine".