2578118401 has 4 divisors (see below), whose sum is σ = 2632972032. Its totient is φ = 2523264772.

The previous prime is 2578118359. The next prime is 2578118419. The reversal of 2578118401 is 1048118752.

2578118401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2578118401 - 2⁹ = 2578117889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578118201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27426745 + ... + 27426838.

It is an arithmetic number, because the mean of its divisors is an integer number (658243008).

Almost surely, 2^2578118401 is an apocalyptic number.

It is an amenable number.

2578118401 is a deficient number, since it is larger than the sum of its proper divisors (54853631).

2578118401 is an equidigital number, since it uses as much as digits as its factorization.

2578118401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54853630.

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 2578118401 is about 50775.1750464733. The cubic root of 2578118401 is about 1371.2004681924.

The spelling of 2578118401 in words is "two billion, five hundred seventy-eight million, one hundred eighteen thousand, four hundred one".