72741307133 has 4 divisors (see below), whose sum is σ = 79354153248. Its totient is φ = 66128461020.

The previous prime is 72741307127. The next prime is 72741307139. The reversal of 72741307133 is 33170314727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33170314727 = 11 ⋅3015483157.

It is an interprime number because it is at equal distance from previous prime (72741307127) and next prime (72741307139).

It is a cyclic number.

It is not a de Polignac number, because 72741307133 - 2⁸ = 72741306877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72741307139) 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, 3306423041 + ... + 3306423062.

It is an arithmetic number, because the mean of its divisors is an integer number (19838538312).

Almost surely, 2^72741307133 is an apocalyptic number.

It is an amenable number.

72741307133 is a deficient number, since it is larger than the sum of its proper divisors (6612846115).

72741307133 is a wasteful number, since it uses less digits than its factorization.

72741307133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612846114.

The product of its (nonzero) digits is 74088, while the sum is 38.

The spelling of 72741307133 in words is "seventy-two billion, seven hundred forty-one million, three hundred seven thousand, one hundred thirty-three".