10978504021 has 16 divisors (see below), whose sum is σ = 11636190720. Its totient is φ = 10341495360.

The previous prime is 10978504013. The next prime is 10978504037. The reversal of 10978504021 is 12040587901.

It is a cyclic number.

It is not a de Polignac number, because 10978504021 - 2³ = 10978504013 is a prime.

It is a super-2 number, since 2×10978504021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10978504051) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 376515 + ... + 404623.

It is an arithmetic number, because the mean of its divisors is an integer number (727261920).

Almost surely, 2^10978504021 is an apocalyptic number.

It is an amenable number.

10978504021 is a deficient number, since it is larger than the sum of its proper divisors (657686699).

10978504021 is a wasteful number, since it uses less digits than its factorization.

10978504021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28476.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 10978504021 in words is "ten billion, nine hundred seventy-eight million, five hundred four thousand, twenty-one".