8201772044 has 6 divisors (see below), whose sum is σ = 14353101084. Its totient is φ = 4100886020.

The previous prime is 8201772031. The next prime is 8201772053. The reversal of 8201772044 is 4402771028.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8201771995 and 8201772013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025221502 + ... + 1025221509.

It is an arithmetic number, because the mean of its divisors is an integer number (2392183514).

Almost surely, 2^8201772044 is an apocalyptic number.

It is an amenable number.

8201772044 is a deficient number, since it is larger than the sum of its proper divisors (6151329040).

8201772044 is a wasteful number, since it uses less digits than its factorization.

8201772044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050443015 (or 2050443013 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 8201772044 is about 90563.6353289774. The cubic root of 8201772044 is about 2016.6749240773.

The spelling of 8201772044 in words is "eight billion, two hundred one million, seven hundred seventy-two thousand, forty-four".