82513202077 has 2 divisors, whose sum is σ = 82513202078. Its totient is φ = 82513202076.

The previous prime is 82513202069. The next prime is 82513202117. The reversal of 82513202077 is 77020231528.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67665535876 + 14847666201 = 260126^2 + 121851^2 .

It is a cyclic number.

It is not a de Polignac number, because 82513202077 - 2³ = 82513202069 is a prime.

It is a super-2 number, since 2×82513202077² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82513202027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41256601038 + 41256601039.

It is an arithmetic number, because the mean of its divisors is an integer number (41256601039).

Almost surely, 2^82513202077 is an apocalyptic number.

It is an amenable number.

82513202077 is a deficient number, since it is larger than the sum of its proper divisors (1).

82513202077 is an equidigital number, since it uses as much as digits as its factorization.

82513202077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 82513202077 in words is "eighty-two billion, five hundred thirteen million, two hundred two thousand, seventy-seven".