87652968121 has 2 divisors, whose sum is σ = 87652968122. Its totient is φ = 87652968120.

The previous prime is 87652968113. The next prime is 87652968157. The reversal of 87652968121 is 12186925678.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86815676025 + 837292096 = 294645^2 + 28936^2 .

It is a cyclic number.

It is not a de Polignac number, because 87652968121 - 2³ = 87652968113 is a prime.

It is not a weakly prime, because it can be changed into another prime (87652968721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43826484060 + 43826484061.

It is an arithmetic number, because the mean of its divisors is an integer number (43826484061).

Almost surely, 2^87652968121 is an apocalyptic number.

It is an amenable number.

87652968121 is a deficient number, since it is larger than the sum of its proper divisors (1).

87652968121 is an equidigital number, since it uses as much as digits as its factorization.

87652968121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 55.

The spelling of 87652968121 in words is "eighty-seven billion, six hundred fifty-two million, nine hundred sixty-eight thousand, one hundred twenty-one".