5178648401 has 2 divisors, whose sum is σ = 5178648402. Its totient is φ = 5178648400.

The previous prime is 5178648373. The next prime is 5178648403. The reversal of 5178648401 is 1048468715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3479230225 + 1699418176 = 58985^2 + 41224^2 .

It is a cyclic number.

It is not a de Polignac number, because 5178648401 - 2²² = 5174454097 is a prime.

It is a super-2 number, since 2×5178648401² = 53636798522359713602, which contains 22 as substring.

Together with 5178648403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5178648403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589324200 + 2589324201.

It is an arithmetic number, because the mean of its divisors is an integer number (2589324201).

Almost surely, 2^5178648401 is an apocalyptic number.

It is an amenable number.

5178648401 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178648401 is an equidigital number, since it uses as much as digits as its factorization.

5178648401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 5178648401 is about 71962.8265217536. The cubic root of 5178648401 is about 1730.1037282855.

The spelling of 5178648401 in words is "five billion, one hundred seventy-eight million, six hundred forty-eight thousand, four hundred one".