72533004163405 has 4 divisors (see below), whose sum is σ = 87039604996092. Its totient is φ = 58026403330720.

The previous prime is 72533004163369. The next prime is 72533004163409. The reversal of 72533004163405 is 50436140033527.

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 8058495885001 + 64474508278404 = 2838749^2 + 8029602^2 .

It is not a de Polignac number, because 72533004163405 - 2¹⁵ = 72533004130637 is a prime.

It is a super-2 number, since 2×72533004163405² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72533004163409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7253300416336 + ... + 7253300416345.

It is an arithmetic number, because the mean of its divisors is an integer number (21759901249023).

Almost surely, 2^{72533004163405} is an apocalyptic number.

It is an amenable number.

72533004163405 is a deficient number, since it is larger than the sum of its proper divisors (14506600832687).

72533004163405 is a wasteful number, since it uses less digits than its factorization.

72533004163405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14506600832686.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 72533004163405 in words is "seventy-two trillion, five hundred thirty-three billion, four million, one hundred sixty-three thousand, four hundred five".