72674772121 has 8 divisors (see below), whose sum is σ = 83191501440. Its totient is φ = 62191697568.

The previous prime is 72674772119. The next prime is 72674772139. The reversal of 72674772121 is 12127747627.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72674772121 - 2¹ = 72674772119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72674742121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8409061 + ... + 8417698.

It is an arithmetic number, because the mean of its divisors is an integer number (10398937680).

Almost surely, 2^72674772121 is an apocalyptic number.

It is an amenable number.

72674772121 is a deficient number, since it is larger than the sum of its proper divisors (10516729319).

72674772121 is a wasteful number, since it uses less digits than its factorization.

72674772121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16827383.

The product of its digits is 460992, while the sum is 46.

The spelling of 72674772121 in words is "seventy-two billion, six hundred seventy-four million, seven hundred seventy-two thousand, one hundred twenty-one".