21041440140429 has 48 divisors (see below), whose sum is σ = 30683467137024. Its totient is φ = 13894040160000.

The previous prime is 21041440140389. The next prime is 21041440140517. The reversal of 21041440140429 is 92404104414012.

21041440140429 is a `hidden beast` number, since 2 + 10 + 41 + 4 + 40 + 140 + 429 = 666.

It is not a de Polignac number, because 21041440140429 - 2¹⁷ = 21041440009357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21041440140393 and 21041440140402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041440150429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2125178379 + ... + 2125188279.

It is an arithmetic number, because the mean of its divisors is an integer number (639238898688).

Almost surely, 2^{21041440140429} is an apocalyptic number.

It is an amenable number.

21041440140429 is a deficient number, since it is larger than the sum of its proper divisors (9642026996595).

21041440140429 is a wasteful number, since it uses less digits than its factorization.

21041440140429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12938 (or 12935 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 21041440140429 in words is "twenty-one trillion, forty-one billion, four hundred forty million, one hundred forty thousand, four hundred twenty-nine".