10947961988 has 24 divisors (see below), whose sum is σ = 20294263584. Its totient is φ = 5149865600.

The previous prime is 10947961987. The next prime is 10947961991. The reversal of 10947961988 is 88916974901.

It is a self number, because there is not a number n which added to its sum of digits gives 10947961988.

It is not an unprimeable number, because it can be changed into a prime (10947961987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140303 + ... + 203913.

It is an arithmetic number, because the mean of its divisors is an integer number (845594316).

Almost surely, 2^10947961988 is an apocalyptic number.

It is an amenable number.

10947961988 is a deficient number, since it is larger than the sum of its proper divisors (9346301596).

10947961988 is a wasteful number, since it uses less digits than its factorization.

10947961988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66163 (or 66161 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 62.

The spelling of 10947961988 in words is "ten billion, nine hundred forty-seven million, nine hundred sixty-one thousand, nine hundred eighty-eight".