87876775541 has 2 divisors, whose sum is σ = 87876775542. Its totient is φ = 87876775540.

The previous prime is 87876775523. The next prime is 87876775583. The reversal of 87876775541 is 14557767878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81650776516 + 6225999025 = 285746^2 + 78905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87876775541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87876775501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43938387770 + 43938387771.

It is an arithmetic number, because the mean of its divisors is an integer number (43938387771).

Almost surely, 2^87876775541 is an apocalyptic number.

It is an amenable number.

87876775541 is a deficient number, since it is larger than the sum of its proper divisors (1).

87876775541 is an equidigital number, since it uses as much as digits as its factorization.

87876775541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92198400, while the sum is 65.

The spelling of 87876775541 in words is "eighty-seven billion, eight hundred seventy-six million, seven hundred seventy-five thousand, five hundred forty-one".