72722298947 has 4 divisors (see below), whose sum is σ = 77000081256. Its totient is φ = 68444516640.

The previous prime is 72722298937. The next prime is 72722298959. The reversal of 72722298947 is 74989222727.

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

It is a cyclic number.

It is not a de Polignac number, because 72722298947 - 2⁴ = 72722298931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72722298937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2138891129 + ... + 2138891162.

It is an arithmetic number, because the mean of its divisors is an integer number (19250020314).

Almost surely, 2^72722298947 is an apocalyptic number.

72722298947 is a deficient number, since it is larger than the sum of its proper divisors (4277782309).

72722298947 is a wasteful number, since it uses less digits than its factorization.

72722298947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4277782308.

The product of its digits is 14224896, while the sum is 59.

The spelling of 72722298947 in words is "seventy-two billion, seven hundred twenty-two million, two hundred ninety-eight thousand, nine hundred forty-seven".