10918578953 has 2 divisors, whose sum is σ = 10918578954. Its totient is φ = 10918578952.

The previous prime is 10918578947. The next prime is 10918578991. The reversal of 10918578953 is 35987581901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8133694969 + 2784883984 = 90187^2 + 52772^2 .

It is an emirp because it is prime and its reverse (35987581901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10918578953 - 2¹⁸ = 10918316809 is a prime.

It is not a weakly prime, because it can be changed into another prime (10918578943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5459289476 + 5459289477.

It is an arithmetic number, because the mean of its divisors is an integer number (5459289477).

Almost surely, 2^10918578953 is an apocalyptic number.

It is an amenable number.

10918578953 is a deficient number, since it is larger than the sum of its proper divisors (1).

10918578953 is an equidigital number, since it uses as much as digits as its factorization.

10918578953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2721600, while the sum is 56.

The spelling of 10918578953 in words is "ten billion, nine hundred eighteen million, five hundred seventy-eight thousand, nine hundred fifty-three".