72550000001 has 4 divisors (see below), whose sum is σ = 72715262400. Its totient is φ = 72384737604.

The previous prime is 72549999997. The next prime is 72550000057. The reversal of 72550000001 is 10000005527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72550000001 - 2² = 72549999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72550000091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82630541 + ... + 82631418.

It is an arithmetic number, because the mean of its divisors is an integer number (18178815600).

Almost surely, 2^72550000001 is an apocalyptic number.

It is an amenable number.

72550000001 is a deficient number, since it is larger than the sum of its proper divisors (165262399).

72550000001 is a wasteful number, since it uses less digits than its factorization.

72550000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165262398.

The product of its (nonzero) digits is 350, while the sum is 20.

Adding to 72550000001 its reverse (10000005527), we get a palindrome (82550005528).

The spelling of 72550000001 in words is "seventy-two billion, five hundred fifty million, one", and thus it is an aban number.