2172778822802 has 8 divisors (see below), whose sum is σ = 3724763696256. Its totient is φ = 931190924052.

The previous prime is 2172778822789. The next prime is 2172778822811. The reversal of 2172778822802 is 2082288772712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77599243658 + ... + 77599243685.

It is an arithmetic number, because the mean of its divisors is an integer number (465595462032).

Almost surely, 2^{2172778822802} is an apocalyptic number.

2172778822802 is a deficient number, since it is larger than the sum of its proper divisors (1551984873454).

2172778822802 is a wasteful number, since it uses less digits than its factorization.

2172778822802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155198487352.

The product of its (nonzero) digits is 5619712, while the sum is 56.

The spelling of 2172778822802 in words is "two trillion, one hundred seventy-two billion, seven hundred seventy-eight million, eight hundred twenty-two thousand, eight hundred two".