72581370211 has 8 divisors (see below), whose sum is σ = 84188199680. Its totient is φ = 61284056328.

The previous prime is 72581370193. The next prime is 72581370229. The reversal of 72581370211 is 11207318527.

It is an interprime number because it is at equal distance from previous prime (72581370193) and next prime (72581370229).

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 72581370211 - 2⁵ = 72581370179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72581370311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77378391 + ... + 77379328.

It is an arithmetic number, because the mean of its divisors is an integer number (10523524960).

Almost surely, 2^72581370211 is an apocalyptic number.

72581370211 is a deficient number, since it is larger than the sum of its proper divisors (11606829469).

72581370211 is a wasteful number, since it uses less digits than its factorization.

72581370211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154757793.

The product of its (nonzero) digits is 23520, while the sum is 37.

Adding to 72581370211 its reverse (11207318527), we get a palindrome (83788688738).

The spelling of 72581370211 in words is "seventy-two billion, five hundred eighty-one million, three hundred seventy thousand, two hundred eleven".