72121056060481 has 2 divisors, whose sum is σ = 72121056060482. Its totient is φ = 72121056060480.

The previous prime is 72121056060437. The next prime is 72121056060569. The reversal of 72121056060481 is 18406065012127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43957019340081 + 28164036720400 = 6630009^2 + 5306980^2 .

It is a cyclic number.

It is not a de Polignac number, because 72121056060481 - 2⁷ = 72121056060353 is a prime.

It is a super-2 number, since 2×72121056060481² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72121056069481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36060528030240 + 36060528030241.

It is an arithmetic number, because the mean of its divisors is an integer number (36060528030241).

Almost surely, 2^{72121056060481} is an apocalyptic number.

It is an amenable number.

72121056060481 is a deficient number, since it is larger than the sum of its proper divisors (1).

72121056060481 is an equidigital number, since it uses as much as digits as its factorization.

72121056060481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 72121056060481 in words is "seventy-two trillion, one hundred twenty-one billion, fifty-six million, sixty thousand, four hundred eighty-one".