87120268284677 has 2 divisors, whose sum is σ = 87120268284678. Its totient is φ = 87120268284676.

The previous prime is 87120268284653. The next prime is 87120268284697. The reversal of 87120268284677 is 77648286202178.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73399126194241 + 13721142090436 = 8567329^2 + 3704206^2 .

It is a cyclic number.

It is not a de Polignac number, because 87120268284677 - 2¹⁶ = 87120268219141 is a prime.

It is a super-2 number, since 2×87120268284677² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87120268284697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43560134142338 + 43560134142339.

It is an arithmetic number, because the mean of its divisors is an integer number (43560134142339).

Almost surely, 2^{87120268284677} is an apocalyptic number.

It is an amenable number.

87120268284677 is a deficient number, since it is larger than the sum of its proper divisors (1).

87120268284677 is an equidigital number, since it uses as much as digits as its factorization.

87120268284677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 202309632, while the sum is 68.

The spelling of 87120268284677 in words is "eighty-seven trillion, one hundred twenty billion, two hundred sixty-eight million, two hundred eighty-four thousand, six hundred seventy-seven".