8439845390153 has 2 divisors, whose sum is σ = 8439845390154. Its totient is φ = 8439845390152.

The previous prime is 8439845389981. The next prime is 8439845390233. The reversal of 8439845390153 is 3510935489348.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7580837102224 + 859008287929 = 2753332^2 + 926827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8439845390153 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8439845393153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4219922695076 + 4219922695077.

It is an arithmetic number, because the mean of its divisors is an integer number (4219922695077).

Almost surely, 2^{8439845390153} is an apocalyptic number.

It is an amenable number.

8439845390153 is a deficient number, since it is larger than the sum of its proper divisors (1).

8439845390153 is an equidigital number, since it uses as much as digits as its factorization.

8439845390153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55987200, while the sum is 62.

The spelling of 8439845390153 in words is "eight trillion, four hundred thirty-nine billion, eight hundred forty-five million, three hundred ninety thousand, one hundred fifty-three".