72964476473 has 4 divisors (see below), whose sum is σ = 83387973120. Its totient is φ = 62540979828.

The previous prime is 72964476467. The next prime is 72964476509. The reversal of 72964476473 is 37467446927.

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: 37467446927 = 81749 ⋅458323.

It is a cyclic number.

It is not a de Polignac number, because 72964476473 - 2¹⁴ = 72964460089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72964476413) 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, 5211748313 + ... + 5211748326.

It is an arithmetic number, because the mean of its divisors is an integer number (20846993280).

Almost surely, 2^72964476473 is an apocalyptic number.

It is an amenable number.

72964476473 is a deficient number, since it is larger than the sum of its proper divisors (10423496647).

72964476473 is a wasteful number, since it uses less digits than its factorization.

72964476473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423496646.

The product of its digits is 42674688, while the sum is 59.

The spelling of 72964476473 in words is "seventy-two billion, nine hundred sixty-four million, four hundred seventy-six thousand, four hundred seventy-three".