72497872819 has 2 divisors, whose sum is σ = 72497872820. Its totient is φ = 72497872818.

The previous prime is 72497872781. The next prime is 72497872873. The reversal of 72497872819 is 91827879427.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72497872819 - 2⁷ = 72497872691 is a prime.

It is a super-2 number, since 2×72497872819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72497872219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36248936409 + 36248936410.

It is an arithmetic number, because the mean of its divisors is an integer number (36248936410).

Almost surely, 2^72497872819 is an apocalyptic number.

72497872819 is a deficient number, since it is larger than the sum of its proper divisors (1).

72497872819 is an equidigital number, since it uses as much as digits as its factorization.

72497872819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28449792, while the sum is 64.

It can be divided in two parts, 724978 and 72819, that added together give a palindrome (797797).

The spelling of 72497872819 in words is "seventy-two billion, four hundred ninety-seven million, eight hundred seventy-two thousand, eight hundred nineteen".