21010512413 has 8 divisors (see below), whose sum is σ = 23408231040. Its totient is φ = 18694072480.

The previous prime is 21010512407. The next prime is 21010512451. The reversal of 21010512413 is 31421501012.

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 21010512413 - 2¹⁴ = 21010496029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010512463) 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, 20319128 + ... + 20320161.

It is an arithmetic number, because the mean of its divisors is an integer number (2926028880).

Almost surely, 2^21010512413 is an apocalyptic number.

It is an amenable number.

21010512413 is a deficient number, since it is larger than the sum of its proper divisors (2397718627).

21010512413 is a wasteful number, since it uses less digits than its factorization.

21010512413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40639347.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 21010512413 in words is "twenty-one billion, ten million, five hundred twelve thousand, four hundred thirteen".