87872530256881 has 2 divisors, whose sum is σ = 87872530256882. Its totient is φ = 87872530256880.

The previous prime is 87872530256869. The next prime is 87872530256893. The reversal of 87872530256881 is 18865203527878.

It is a balanced prime because it is at equal distance from previous prime (87872530256869) and next prime (87872530256893).

It can be written as a sum of positive squares in only one way, i.e., 83719004736481 + 4153525520400 = 9149809^2 + 2038020^2 .

It is a cyclic number.

It is not a de Polignac number, because 87872530256881 - 2¹⁵ = 87872530224113 is a prime.

It is a super-2 number, since 2×87872530256881² (a number of 29 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 87872530256881.

It is not a weakly prime, because it can be changed into another prime (87872530256081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43936265128440 + 43936265128441.

It is an arithmetic number, because the mean of its divisors is an integer number (43936265128441).

Almost surely, 2^{87872530256881} is an apocalyptic number.

It is an amenable number.

87872530256881 is a deficient number, since it is larger than the sum of its proper divisors (1).

87872530256881 is an equidigital number, since it uses as much as digits as its factorization.

87872530256881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 361267200, while the sum is 70.

The spelling of 87872530256881 in words is "eighty-seven trillion, eight hundred seventy-two billion, five hundred thirty million, two hundred fifty-six thousand, eight hundred eighty-one".