2604640444426 has 4 divisors (see below), whose sum is σ = 3906960666642. Its totient is φ = 1302320222212.

The previous prime is 2604640444423. The next prime is 2604640444451. The reversal of 2604640444426 is 6244440464062.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2084705710201 + 519934734225 = 1443851^2 + 721065^2 .

It is not an unprimeable number, because it can be changed into a prime (2604640444423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651160111105 + ... + 651160111108.

Almost surely, 2^{2604640444426} is an apocalyptic number.

2604640444426 is a deficient number, since it is larger than the sum of its proper divisors (1302320222216).

2604640444426 is a wasteful number, since it uses less digits than its factorization.

2604640444426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302320222215.

The product of its (nonzero) digits is 3538944, while the sum is 46.

The spelling of 2604640444426 in words is "two trillion, six hundred four billion, six hundred forty million, four hundred forty-four thousand, four hundred twenty-six".