87121184365451 has 2 divisors, whose sum is σ = 87121184365452. Its totient is φ = 87121184365450.

The previous prime is 87121184365363. The next prime is 87121184365469. The reversal of 87121184365451 is 15456348112178.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87121184365451 is a prime.

It is not a weakly prime, because it can be changed into another prime (87121184365751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43560592182725 + 43560592182726.

It is an arithmetic number, because the mean of its divisors is an integer number (43560592182726).

Almost surely, 2^{87121184365451} is an apocalyptic number.

87121184365451 is a deficient number, since it is larger than the sum of its proper divisors (1).

87121184365451 is an equidigital number, since it uses as much as digits as its factorization.

87121184365451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6451200, while the sum is 56.

The spelling of 87121184365451 in words is "eighty-seven trillion, one hundred twenty-one billion, one hundred eighty-four million, three hundred sixty-five thousand, four hundred fifty-one".