2672778856858 has 16 divisors (see below), whose sum is σ = 4374293204160. Its totient is φ = 1214717515200.

The previous prime is 2672778856829. The next prime is 2672778856861. The reversal of 2672778856858 is 8586588772762.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8947983 + ... + 9241858.

It is an arithmetic number, because the mean of its divisors is an integer number (273393325260).

Almost surely, 2^{2672778856858} is an apocalyptic number.

2672778856858 is a deficient number, since it is larger than the sum of its proper divisors (1701514347302).

2672778856858 is a wasteful number, since it uses less digits than its factorization.

2672778856858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18196533.

The product of its digits is 5057740800, while the sum is 79.

The spelling of 2672778856858 in words is "two trillion, six hundred seventy-two billion, seven hundred seventy-eight million, eight hundred fifty-six thousand, eight hundred fifty-eight".