87262026277 has 2 divisors, whose sum is σ = 87262026278. Its totient is φ = 87262026276.

The previous prime is 87262026251. The next prime is 87262026311. The reversal of 87262026277 is 77262026278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77882297476 + 9379728801 = 279074^2 + 96849^2 .

It is a cyclic number.

It is not a de Polignac number, because 87262026277 - 2¹¹ = 87262024229 is a prime.

It is a super-2 number, since 2×87262026277² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87262026277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87262021277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43631013138 + 43631013139.

It is an arithmetic number, because the mean of its divisors is an integer number (43631013139).

Almost surely, 2^87262026277 is an apocalyptic number.

It is an amenable number.

87262026277 is a deficient number, since it is larger than the sum of its proper divisors (1).

87262026277 is an equidigital number, since it uses as much as digits as its factorization.

87262026277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1580544, while the sum is 49.

Subtracting from 87262026277 its reverse (77262026278), we obtain a palindrome (9999999999).

The spelling of 87262026277 in words is "eighty-seven billion, two hundred sixty-two million, twenty-six thousand, two hundred seventy-seven".