4978576978 has 8 divisors (see below), whose sum is σ = 7470028620. Its totient is φ = 2488567440.

The previous prime is 4978576961. The next prime is 4978577017. The reversal of 4978576978 is 8796758794.

It can be written as a sum of positive squares in 2 ways, for example, as 3694573089 + 1284003889 = 60783^2 + 35833^2 .

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

It is a super-2 number, since 2×4978576978² = 49572457451743224968, which contains 22 as substring.

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, 351853 + ... + 365728.

Almost surely, 2^4978576978 is an apocalyptic number.

4978576978 is a deficient number, since it is larger than the sum of its proper divisors (2491451642).

4978576978 is a wasteful number, since it uses less digits than its factorization.

4978576978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721052.

The product of its digits is 213373440, while the sum is 70.

The square root of 4978576978 is about 70559.0318669410. The cubic root of 4978576978 is about 1707.5302602559.

The spelling of 4978576978 in words is "four billion, nine hundred seventy-eight million, five hundred seventy-six thousand, nine hundred seventy-eight".