2689819216640 has 72 divisors (see below), whose sum is σ = 6444903205440. Its totient is φ = 1075602784256.

The previous prime is 2689819216631. The next prime is 2689819216657. The reversal of 2689819216640 is 466129189862.

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, 3945497 + ... + 4576743.

It is an arithmetic number, because the mean of its divisors is an integer number (89512544520).

Almost surely, 2^{2689819216640} is an apocalyptic number.

2689819216640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2689819216640 is an abundant number, since it is smaller than the sum of its proper divisors (3755083988800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2689819216640 is an equidigital number, since it uses as much as digits as its factorization.

2689819216640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634597 (or 634583 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 62.

The spelling of 2689819216640 in words is "two trillion, six hundred eighty-nine billion, eight hundred nineteen million, two hundred sixteen thousand, six hundred forty".