4778231772672 has 400 divisors, whose sum is σ = 15250430017152. Its totient is φ = 1484188876800.

The previous prime is 4778231772653. The next prime is 4778231772697. The reversal of 4778231772672 is 2762771328774.

It is a happy number.

4778231772672 is a `hidden beast` number, since 4 + 7 + 78 + 231 + 77 + 267 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71173873 + ... + 71240975.

Almost surely, 2^{4778231772672} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778231772672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7625215008576).

4778231772672 is an abundant number, since it is smaller than the sum of its proper divisors (10472198244480).

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

4778231772672 is a wasteful number, since it uses less digits than its factorization.

4778231772672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67251 (or 67226 counting only the distinct ones).

The product of its digits is 77446656, while the sum is 63.

The spelling of 4778231772672 in words is "four trillion, seven hundred seventy-eight billion, two hundred thirty-one million, seven hundred seventy-two thousand, six hundred seventy-two".