20870293843 has 8 divisors (see below), whose sum is σ = 23852844800. Its totient is φ = 17888013000.

The previous prime is 20870293819. The next prime is 20870293859. The reversal of 20870293843 is 34839207802.

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 20870293843 - 2⁵ = 20870293811 is a prime.

It is a super-3 number, since 3×20870293843³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20870293793 and 20870293802.

It is not an unprimeable number, because it can be changed into a prime (20870293883) 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, 140968 + ... + 248218.

It is an arithmetic number, because the mean of its divisors is an integer number (2981605600).

Almost surely, 2^20870293843 is an apocalyptic number.

20870293843 is a deficient number, since it is larger than the sum of its proper divisors (2982550957).

20870293843 is a wasteful number, since it uses less digits than its factorization.

20870293843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135057.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 20870293843 in words is "twenty billion, eight hundred seventy million, two hundred ninety-three thousand, eight hundred forty-three".