72530771149 has 2 divisors, whose sum is σ = 72530771150. Its totient is φ = 72530771148.

The previous prime is 72530771129. The next prime is 72530771189. The reversal of 72530771149 is 94117703527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48863102500 + 23667668649 = 221050^2 + 153843^2 .

It is a cyclic number.

It is not a de Polignac number, because 72530771149 - 2¹³ = 72530762957 is a prime.

It is a super-2 number, since 2×72530771149² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72530771099 and 72530771108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72530771129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36265385574 + 36265385575.

It is an arithmetic number, because the mean of its divisors is an integer number (36265385575).

Almost surely, 2^72530771149 is an apocalyptic number.

It is an amenable number.

72530771149 is a deficient number, since it is larger than the sum of its proper divisors (1).

72530771149 is an equidigital number, since it uses as much as digits as its factorization.

72530771149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 72530771149 in words is "seventy-two billion, five hundred thirty million, seven hundred seventy-one thousand, one hundred forty-nine".