21034041362512 has 20 divisors (see below), whose sum is σ = 43150717207476. Its totient is φ = 9898372405760.

The previous prime is 21034041362479. The next prime is 21034041362549. The reversal of 21034041362512 is 21526314043012.

It can be written as a sum of positive squares in 2 ways, for example, as 19564379770896 + 1469661591616 = 4423164^2 + 1212296^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38665516939 + ... + 38665517482.

Almost surely, 2^{21034041362512} is an apocalyptic number.

It is an amenable number.

21034041362512 is an abundant number, since it is smaller than the sum of its proper divisors (22116675844964).

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

21034041362512 is a wasteful number, since it uses less digits than its factorization.

21034041362512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77331034446 (or 77331034440 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 21034041362512 in words is "twenty-one trillion, thirty-four billion, forty-one million, three hundred sixty-two thousand, five hundred twelve".