2644510042 has 4 divisors (see below), whose sum is σ = 3966765066. Its totient is φ = 1322255020.

The previous prime is 2644510027. The next prime is 2644510067. The reversal of 2644510042 is 2400154462.

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., 2110391721 + 534118321 = 45939^2 + 23111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661127509 + ... + 661127512.

Almost surely, 2^2644510042 is an apocalyptic number.

2644510042 is a deficient number, since it is larger than the sum of its proper divisors (1322255024).

2644510042 is a wasteful number, since it uses less digits than its factorization.

2644510042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322255023.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 2644510042 is about 51424.7998732129. The cubic root of 2644510042 is about 1382.8712260070.

The spelling of 2644510042 in words is "two billion, six hundred forty-four million, five hundred ten thousand, forty-two".