8465608470421 has 2 divisors, whose sum is σ = 8465608470422. Its totient is φ = 8465608470420.

The previous prime is 8465608470301. The next prime is 8465608470437. The reversal of 8465608470421 is 1240748065648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4304359343025 + 4161249127396 = 2074695^2 + 2039914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8465608470421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8465608470721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4232804235210 + 4232804235211.

It is an arithmetic number, because the mean of its divisors is an integer number (4232804235211).

Almost surely, 2^{8465608470421} is an apocalyptic number.

It is an amenable number.

8465608470421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8465608470421 is an equidigital number, since it uses as much as digits as its factorization.

8465608470421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 8465608470421 in words is "eight trillion, four hundred sixty-five billion, six hundred eight million, four hundred seventy thousand, four hundred twenty-one".