4977721648 has 20 divisors (see below), whose sum is σ = 9654098368. Its totient is φ = 2486341440.

The previous prime is 4977721613. The next prime is 4977721687. The reversal of 4977721648 is 8461277794.

It is a happy 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, 141111 + ... + 172822.

Almost surely, 2^4977721648 is an apocalyptic number.

It is an amenable number.

4977721648 is a deficient number, since it is larger than the sum of its proper divisors (4676376720).

4977721648 is a wasteful number, since it uses less digits than its factorization.

4977721648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314932 (or 314926 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 55.

The square root of 4977721648 is about 70552.9705115242. The cubic root of 4977721648 is about 1707.4324688916.

The spelling of 4977721648 in words is "four billion, nine hundred seventy-seven million, seven hundred twenty-one thousand, six hundred forty-eight".