10778434553 has 8 divisors (see below), whose sum is σ = 11152096200. Its totient is φ = 10404905728.

The previous prime is 10778434549. The next prime is 10778434619. The reversal of 10778434553 is 35543487701.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1111022224 + 9667412329 = 33332^2 + 98323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10778434553 - 2² = 10778434549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10778434498 and 10778434507.

It is not an unprimeable number, because it can be changed into a prime (10778434543) 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 in 7 ways as a sum of consecutive naturals, for example, 148913 + ... + 209121.

It is an arithmetic number, because the mean of its divisors is an integer number (1394012025).

Almost surely, 2^10778434553 is an apocalyptic number.

It is an amenable number.

10778434553 is a deficient number, since it is larger than the sum of its proper divisors (373661647).

10778434553 is an equidigital number, since it uses as much as digits as its factorization.

10778434553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66411.

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 10778434553 in words is "ten billion, seven hundred seventy-eight million, four hundred thirty-four thousand, five hundred fifty-three".