10978971512 has 8 divisors (see below), whose sum is σ = 20585571600. Its totient is φ = 5489485752.

The previous prime is 10978971491. The next prime is 10978971527. The reversal of 10978971512 is 21517987901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×10978971512² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686185712 + ... + 686185727.

It is an arithmetic number, because the mean of its divisors is an integer number (2573196450).

Almost surely, 2^10978971512 is an apocalyptic number.

It is an amenable number.

10978971512 is a deficient number, since it is larger than the sum of its proper divisors (9606600088).

10978971512 is a wasteful number, since it uses less digits than its factorization.

10978971512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372371445 (or 1372371441 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 50.

The spelling of 10978971512 in words is "ten billion, nine hundred seventy-eight million, nine hundred seventy-one thousand, five hundred twelve".