20835269093 has 4 divisors (see below), whose sum is σ = 21041558988. Its totient is φ = 20628979200.

The previous prime is 20835269089. The next prime is 20835269107. The reversal of 20835269093 is 39096253802.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11484765889 + 9350503204 = 107167^2 + 96698^2 .

It is a cyclic number.

It is not a de Polignac number, because 20835269093 - 2² = 20835269089 is a prime.

It is a super-3 number, since 3×20835269093³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20835269593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103144796 + ... + 103144997.

It is an arithmetic number, because the mean of its divisors is an integer number (5260389747).

Almost surely, 2^20835269093 is an apocalyptic number.

It is an amenable number.

20835269093 is a deficient number, since it is larger than the sum of its proper divisors (206289895).

20835269093 is a wasteful number, since it uses less digits than its factorization.

20835269093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206289894.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 20835269093 in words is "twenty billion, eight hundred thirty-five million, two hundred sixty-nine thousand, ninety-three".