2651662320442 has 16 divisors (see below), whose sum is σ = 4013288356392. Its totient is φ = 1313903019520.

The previous prime is 2651662320407. The next prime is 2651662320487. The reversal of 2651662320442 is 2440232661562.

It can be written as a sum of positive squares in 4 ways, for example, as 898895506201 + 1752766814241 = 948101^2 + 1323921^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660288 + ... + 2395684.

Almost surely, 2^{2651662320442} is an apocalyptic number.

2651662320442 is a deficient number, since it is larger than the sum of its proper divisors (1361626035950).

2651662320442 is a wasteful number, since it uses less digits than its factorization.

2651662320442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1742273.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 2651662320442 in words is "two trillion, six hundred fifty-one billion, six hundred sixty-two million, three hundred twenty thousand, four hundred forty-two".