87061138122701 has 2 divisors, whose sum is σ = 87061138122702. Its totient is φ = 87061138122700.

The previous prime is 87061138122697. The next prime is 87061138122733. The reversal of 87061138122701 is 10722183116078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86050650769801 + 1010487352900 = 9276349^2 + 1005230^2 .

It is a cyclic number.

It is not a de Polignac number, because 87061138122701 - 2² = 87061138122697 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87061138122781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43530569061350 + 43530569061351.

It is an arithmetic number, because the mean of its divisors is an integer number (43530569061351).

Almost surely, 2^{87061138122701} is an apocalyptic number.

It is an amenable number.

87061138122701 is a deficient number, since it is larger than the sum of its proper divisors (1).

87061138122701 is an equidigital number, since it uses as much as digits as its factorization.

87061138122701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 87061138122701 in words is "eighty-seven trillion, sixty-one billion, one hundred thirty-eight million, one hundred twenty-two thousand, seven hundred one".