72070576721121 has 48 divisors (see below), whose sum is σ = 108202892365568. Its totient is φ = 42615019006560.

The previous prime is 72070576721113. The next prime is 72070576721131. The reversal of 72070576721121 is 12112767507027.

It is not a de Polignac number, because 72070576721121 - 2³ = 72070576721113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72070576721131) 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 47 ways as a sum of consecutive naturals, for example, 11168226 + ... + 16397268.

Almost surely, 2^{72070576721121} is an apocalyptic number.

It is an amenable number.

72070576721121 is a deficient number, since it is larger than the sum of its proper divisors (36132315644447).

72070576721121 is a wasteful number, since it uses less digits than its factorization.

72070576721121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5229994 (or 5229983 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 48.

The spelling of 72070576721121 in words is "seventy-two trillion, seventy billion, five hundred seventy-six million, seven hundred twenty-one thousand, one hundred twenty-one".