72143796501 has 32 divisors (see below), whose sum is σ = 123229221120. Its totient is φ = 40860191232.

The previous prime is 72143796481. The next prime is 72143796511. The reversal of 72143796501 is 10569734127.

72143796501 is a `hidden beast` number, since 7 + 21 + 4 + 37 + 96 + 501 = 666.

It is not a de Polignac number, because 72143796501 - 2¹¹ = 72143794453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72143796511) 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 31 ways as a sum of consecutive naturals, for example, 1667640 + ... + 1710353.

It is an arithmetic number, because the mean of its divisors is an integer number (3850913160).

Almost surely, 2^72143796501 is an apocalyptic number.

It is an amenable number.

72143796501 is a deficient number, since it is larger than the sum of its proper divisors (51085424619).

72143796501 is a wasteful number, since it uses less digits than its factorization.

72143796501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378122 (or 3378116 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 72143796501 in words is "seventy-two billion, one hundred forty-three million, seven hundred ninety-six thousand, five hundred one".