72046000921 has 8 divisors (see below), whose sum is σ = 72339410880. Its totient is φ = 71752738992.

The previous prime is 72046000919. The next prime is 72046000987. The reversal of 72046000921 is 12900064027.

It is the 109580-th star number.

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

It is a cyclic number.

It is not a de Polignac number, because 72046000921 - 2¹ = 72046000919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72046000121) 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 7 ways as a sum of consecutive naturals, for example, 996835 + ... + 1066663.

It is an arithmetic number, because the mean of its divisors is an integer number (9042426360).

Almost surely, 2^72046000921 is an apocalyptic number.

It is an amenable number.

72046000921 is a deficient number, since it is larger than the sum of its proper divisors (293409959).

72046000921 is a wasteful number, since it uses less digits than its factorization.

72046000921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74015.

The product of its (nonzero) digits is 6048, while the sum is 31.

Adding to 72046000921 its reverse (12900064027), we get a palindrome (84946064948).

The spelling of 72046000921 in words is "seventy-two billion, forty-six million, nine hundred twenty-one", and thus it is an aban number.