21024535846249 has 8 divisors (see below), whose sum is σ = 22642455917312. Its totient is φ = 19406708358480.

The previous prime is 21024535846247. The next prime is 21024535846253. The reversal of 21024535846249 is 94264853542012.

It is a happy number.

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 21024535846249 - 2¹ = 21024535846247 is a prime.

It is a super-2 number, since 2×21024535846249² (a number of 27 digits) contains 22 as substring.

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 21024535846249.

It is not an unprimeable number, because it can be changed into a prime (21024535846247) 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, 22673817 + ... + 23582854.

It is an arithmetic number, because the mean of its divisors is an integer number (2830306989664).

Almost surely, 2^{21024535846249} is an apocalyptic number.

It is an amenable number.

21024535846249 is a deficient number, since it is larger than the sum of its proper divisors (1617920071063).

21024535846249 is a wasteful number, since it uses less digits than its factorization.

21024535846249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46291647.

The product of its (nonzero) digits is 16588800, while the sum is 55.

The spelling of 21024535846249 in words is "twenty-one trillion, twenty-four billion, five hundred thirty-five million, eight hundred forty-six thousand, two hundred forty-nine".