72736061407 has 4 divisors (see below), whose sum is σ = 72923043960. Its totient is φ = 72549078856.

The previous prime is 72736061393. The next prime is 72736061443. The reversal of 72736061407 is 70416063727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70416063727 = 4349 ⋅16191323.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72736061407 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 (72736061207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93490693 + ... + 93491470.

It is an arithmetic number, because the mean of its divisors is an integer number (18230760990).

Almost surely, 2^72736061407 is an apocalyptic number.

72736061407 is a deficient number, since it is larger than the sum of its proper divisors (186982553).

72736061407 is a wasteful number, since it uses less digits than its factorization.

72736061407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186982552.

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 72736061407 in words is "seventy-two billion, seven hundred thirty-six million, sixty-one thousand, four hundred seven".