72165011050633 has 4 divisors (see below), whose sum is σ = 72908980236820. Its totient is φ = 71421041864448.

The previous prime is 72165011050603. The next prime is 72165011050687. The reversal of 72165011050633 is 33605011056127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38982203806329 + 33182807244304 = 6243573^2 + 5760452^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72165011050633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72165011050603) 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, 371984592948 + ... + 371984593141.

It is an arithmetic number, because the mean of its divisors is an integer number (18227245059205).

Almost surely, 2^{72165011050633} is an apocalyptic number.

It is an amenable number.

72165011050633 is a deficient number, since it is larger than the sum of its proper divisors (743969186187).

72165011050633 is an equidigital number, since it uses as much as digits as its factorization.

72165011050633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743969186186.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 72165011050633 in words is "seventy-two trillion, one hundred sixty-five billion, eleven million, fifty thousand, six hundred thirty-three".