10439437729921 has 8 divisors (see below), whose sum is σ = 10449818618400. Its totient is φ = 10429061700000.

The previous prime is 10439437729913. The next prime is 10439437729943. The reversal of 10439437729921 is 12992773493401.

10439437729921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10439437729921 - 2³ = 10439437729913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10439437729921.

It is not an unprimeable number, because it can be changed into a prime (10439437729621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3092421 + ... + 5517421.

It is an arithmetic number, because the mean of its divisors is an integer number (1306227327300).

Almost surely, 2^{10439437729921} is an apocalyptic number.

It is an amenable number.

10439437729921 is a deficient number, since it is larger than the sum of its proper divisors (10380888479).

10439437729921 is a wasteful number, since it uses less digits than its factorization.

10439437729921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429279.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 10439437729921 in words is "ten trillion, four hundred thirty-nine billion, four hundred thirty-seven million, seven hundred twenty-nine thousand, nine hundred twenty-one".