20952252293 has 32 divisors (see below), whose sum is σ = 27171500544. Its totient is φ = 15730716672.

The previous prime is 20952252289. The next prime is 20952252323. The reversal of 20952252293 is 39225225902.

It is a cyclic number.

It is not a de Polignac number, because 20952252293 - 2² = 20952252289 is a prime.

It is a super-2 number, since 2×20952252293² (a number of 21 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 20952252293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20952252493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2180 + ... + 204717.

It is an arithmetic number, because the mean of its divisors is an integer number (849109392).

Almost surely, 2^20952252293 is an apocalyptic number.

20952252293 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20952252293 is a deficient number, since it is larger than the sum of its proper divisors (6219248251).

20952252293 is a wasteful number, since it uses less digits than its factorization.

20952252293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206981.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 20952252293 in words is "twenty billion, nine hundred fifty-two million, two hundred fifty-two thousand, two hundred ninety-three".