4777773021 has 12 divisors (see below), whose sum is σ = 7887117472. Its totient is φ = 2730155976.

The previous prime is 4777773017. The next prime is 4777773029. The reversal of 4777773021 is 1203777774.

It is not a de Polignac number, because 4777773021 - 2² = 4777773017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4777773029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37918771 + ... + 37918896.

Almost surely, 2^4777773021 is an apocalyptic number.

It is an amenable number.

4777773021 is a deficient number, since it is larger than the sum of its proper divisors (3109344451).

4777773021 is a wasteful number, since it uses less digits than its factorization.

4777773021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75837680 (or 75837677 counting only the distinct ones).

The product of its (nonzero) digits is 403368, while the sum is 45.

The square root of 4777773021 is about 69121.4367689214. The cubic root of 4777773021 is about 1684.2575567843.

The spelling of 4777773021 in words is "four billion, seven hundred seventy-seven million, seven hundred seventy-three thousand, twenty-one".