72469104121 has 2 divisors, whose sum is σ = 72469104122. Its totient is φ = 72469104120.

The previous prime is 72469104119. The next prime is 72469104139. The reversal of 72469104121 is 12140196427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67685306896 + 4783797225 = 260164^2 + 69165^2 .

It is a cyclic number.

It is not a de Polignac number, because 72469104121 - 2¹ = 72469104119 is a prime.

Together with 72469104119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72469104221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36234552060 + 36234552061.

It is an arithmetic number, because the mean of its divisors is an integer number (36234552061).

Almost surely, 2^72469104121 is an apocalyptic number.

It is an amenable number.

72469104121 is a deficient number, since it is larger than the sum of its proper divisors (1).

72469104121 is an equidigital number, since it uses as much as digits as its factorization.

72469104121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 72469104121 in words is "seventy-two billion, four hundred sixty-nine million, one hundred four thousand, one hundred twenty-one".