20259442940 has 48 divisors (see below), whose sum is σ = 46461026304. Its totient is φ = 7359374400.

The previous prime is 20259442939. The next prime is 20259442969. The reversal of 20259442940 is 4924495202.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 165125 + ... + 260355.

It is an arithmetic number, because the mean of its divisors is an integer number (967938048).

Almost surely, 2^20259442940 is an apocalyptic number.

20259442940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20259442940 is an abundant number, since it is smaller than the sum of its proper divisors (26201583364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20259442940 is a wasteful number, since it uses less digits than its factorization.

20259442940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96218 (or 96216 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20259442940 in words is "twenty billion, two hundred fifty-nine million, four hundred forty-two thousand, nine hundred forty".