9978775562 has 8 divisors (see below), whose sum is σ = 17106472416. Its totient is φ = 4276618092.

The previous prime is 9978775559. The next prime is 9978775567. The reversal of 9978775562 is 2655778799.

9978775562 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (9978775567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356384828 + ... + 356384855.

It is an arithmetic number, because the mean of its divisors is an integer number (2138309052).

Almost surely, 2^9978775562 is an apocalyptic number.

9978775562 is a deficient number, since it is larger than the sum of its proper divisors (7127696854).

9978775562 is a wasteful number, since it uses less digits than its factorization.

9978775562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712769692.

The product of its digits is 66679200, while the sum is 65.

The square root of 9978775562 is about 99893.8214405676. The cubic root of 9978775562 is about 2152.9093882165.

The spelling of 9978775562 in words is "nine billion, nine hundred seventy-eight million, seven hundred seventy-five thousand, five hundred sixty-two".