20256326043 has 24 divisors (see below), whose sum is σ = 27855070992. Its totient is φ = 13089081408.

The previous prime is 20256326039. The next prime is 20256326071. The reversal of 20256326043 is 34062365202.

It is not a de Polignac number, because 20256326043 - 2² = 20256326039 is a prime.

It is a super-3 number, since 3×20256326043³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20256325995 and 20256326013.

It is not an unprimeable number, because it can be changed into a prime (20256326003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1086105 + ... + 1104597.

It is an arithmetic number, because the mean of its divisors is an integer number (1160627958).

Almost surely, 2^20256326043 is an apocalyptic number.

20256326043 is a deficient number, since it is larger than the sum of its proper divisors (7598744949).

20256326043 is an equidigital number, since it uses as much as digits as its factorization.

20256326043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18715 (or 18632 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The spelling of 20256326043 in words is "twenty billion, two hundred fifty-six million, three hundred twenty-six thousand, forty-three".