87461004797 has 2 divisors, whose sum is σ = 87461004798. Its totient is φ = 87461004796.

The previous prime is 87461004781. The next prime is 87461004803. The reversal of 87461004797 is 79740016478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83908129561 + 3552875236 = 289669^2 + 59606^2 .

It is a cyclic number.

It is not a de Polignac number, because 87461004797 - 2⁴ = 87461004781 is a prime.

It is a super-2 number, since 2×87461004797² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87461004707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43730502398 + 43730502399.

It is an arithmetic number, because the mean of its divisors is an integer number (43730502399).

Almost surely, 2^87461004797 is an apocalyptic number.

It is an amenable number.

87461004797 is a deficient number, since it is larger than the sum of its proper divisors (1).

87461004797 is an equidigital number, since it uses as much as digits as its factorization.

87461004797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 87461004797 in words is "eighty-seven billion, four hundred sixty-one million, four thousand, seven hundred ninety-seven".