9977242648 has 16 divisors (see below), whose sum is σ = 18708878880. Its totient is φ = 4988208288.

The previous prime is 9977242609. The next prime is 9977242651. The reversal of 9977242648 is 8462427799.

It is a junction number, because it is equal to n+sod(n) for n = 9977242592 and 9977242601.

It is a congruent 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, 67090 + ... + 156382.

It is an arithmetic number, because the mean of its divisors is an integer number (1169304930).

Almost surely, 2^9977242648 is an apocalyptic number.

It is an amenable number.

9977242648 is a deficient number, since it is larger than the sum of its proper divisors (8731636232).

9977242648 is a wasteful number, since it uses less digits than its factorization.

9977242648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103266 (or 103262 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 58.

The square root of 9977242648 is about 99886.1484290990. The cubic root of 9977242648 is about 2152.7991410916.

The spelling of 9977242648 in words is "nine billion, nine hundred seventy-seven million, two hundred forty-two thousand, six hundred forty-eight".