21026144074 has 16 divisors (see below), whose sum is σ = 33969335400. Its totient is φ = 9703224000.

The previous prime is 21026144053. The next prime is 21026144093. The reversal of 21026144074 is 47044162012.

21026144074 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 20510536225 + 515607849 = 143215^2 + 22707^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199824 + ... + 286324.

Almost surely, 2^21026144074 is an apocalyptic number.

21026144074 is a deficient number, since it is larger than the sum of its proper divisors (12943191326).

21026144074 is a wasteful number, since it uses less digits than its factorization.

21026144074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95865.

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 21026144074 in words is "twenty-one billion, twenty-six million, one hundred forty-four thousand, seventy-four".