21064480011386 has 64 divisors (see below), whose sum is σ = 38287135033344. Its totient is φ = 8499346329600.

The previous prime is 21064480011373. The next prime is 21064480011397. The reversal of 21064480011386 is 68311008446012.

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, 152819330 + ... + 152957106.

It is an arithmetic number, because the mean of its divisors is an integer number (598236484896).

Almost surely, 2^{21064480011386} is an apocalyptic number.

21064480011386 is a deficient number, since it is larger than the sum of its proper divisors (17222655021958).

21064480011386 is a wasteful number, since it uses less digits than its factorization.

21064480011386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147375.

The product of its (nonzero) digits is 221184, while the sum is 44.

Adding to 21064480011386 its reverse (68311008446012), we get a palindrome (89375488457398).

The spelling of 21064480011386 in words is "twenty-one trillion, sixty-four billion, four hundred eighty million, eleven thousand, three hundred eighty-six".