977777222222 has 8 divisors (see below), whose sum is σ = 1474036014000. Its totient is φ = 486431884224.

The previous prime is 977777222189. The next prime is 977777222239. The reversal of 977777222222 is 222222777779.

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

It is a nialpdrome in base 10.

It is a congruent number.

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, 1228362947 + ... + 1228363742.

It is an arithmetic number, because the mean of its divisors is an integer number (184254501750).

Almost surely, 2^977777222222 is an apocalyptic number.

977777222222 is a deficient number, since it is larger than the sum of its proper divisors (496258791778).

977777222222 is a wasteful number, since it uses less digits than its factorization.

977777222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456726890.

The product of its digits is 9680832, while the sum is 56.

The spelling of 977777222222 in words is "nine hundred seventy-seven billion, seven hundred seventy-seven million, two hundred twenty-two thousand, two hundred twenty-two".