10979578489638 has 64 divisors (see below), whose sum is σ = 25445625576192. Its totient is φ = 3121425914880.

The previous prime is 10979578489619. The next prime is 10979578489709. The reversal of 10979578489638 is 83698487597901.

It is a super-2 number, since 2×10979578489638² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15280956 + ... + 15983327.

It is an arithmetic number, because the mean of its divisors is an integer number (397587899628).

Almost surely, 2^{10979578489638} is an apocalyptic number.

10979578489638 is an abundant number, since it is smaller than the sum of its proper divisors (14466047086554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10979578489638 is a wasteful number, since it uses less digits than its factorization.

10979578489638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31264629.

The product of its (nonzero) digits is 6584094720, while the sum is 84.

The spelling of 10979578489638 in words is "ten trillion, nine hundred seventy-nine billion, five hundred seventy-eight million, four hundred eighty-nine thousand, six hundred thirty-eight".