5361358778 has 4 divisors (see below), whose sum is σ = 8042038170. Its totient is φ = 2680679388.

The previous prime is 5361358777. The next prime is 5361358787. The reversal of 5361358778 is 8778531635.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8778531635 = 5 ⋅1755706327.

It can be written as a sum of positive squares in only one way, i.e., 5048528809 + 312829969 = 71053^2 + 17687^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5361358777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1340339693 + ... + 1340339696.

Almost surely, 2^5361358778 is an apocalyptic number.

5361358778 is a deficient number, since it is larger than the sum of its proper divisors (2680679392).

5361358778 is a wasteful number, since it uses less digits than its factorization.

5361358778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680679391.

The product of its digits is 4233600, while the sum is 53.

The square root of 5361358778 is about 73221.3000294313. The cubic root of 5361358778 is about 1750.2158947793.

The spelling of 5361358778 in words is "five billion, three hundred sixty-one million, three hundred fifty-eight thousand, seven hundred seventy-eight".