21040011032344 has 8 divisors (see below), whose sum is σ = 39450020685660. Its totient is φ = 10520005516168.

The previous prime is 21040011032333. The next prime is 21040011032371. The reversal of 21040011032344 is 44323011004012.

21040011032344 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21040011032344² (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 as a sum of consecutive naturals, namely, 1315000689514 + ... + 1315000689529.

Almost surely, 2^{21040011032344} is an apocalyptic number.

It is an amenable number.

21040011032344 is a deficient number, since it is larger than the sum of its proper divisors (18410009653316).

21040011032344 is a wasteful number, since it uses less digits than its factorization.

21040011032344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630001379049 (or 2630001379045 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21040011032344 its reverse (44323011004012), we get a palindrome (65363022036356).

The spelling of 21040011032344 in words is "twenty-one trillion, forty billion, eleven million, thirty-two thousand, three hundred forty-four".