20368449120 has 48 divisors (see below), whose sum is σ = 64160616240. Its totient is φ = 5431586304.

The previous prime is 20368449119. The next prime is 20368449121. The reversal of 20368449120 is 2194486302.

It is an interprime number because it is at equal distance from previous prime (20368449119) and next prime (20368449121).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20368449121) 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, 21216655 + ... + 21217614.

It is an arithmetic number, because the mean of its divisors is an integer number (1336679505).

Almost surely, 2^20368449120 is an apocalyptic number.

20368449120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20368449120 is an abundant number, since it is smaller than the sum of its proper divisors (43792167120).

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

20368449120 is a wasteful number, since it uses less digits than its factorization.

20368449120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42434287 (or 42434279 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 20368449120 in words is "twenty billion, three hundred sixty-eight million, four hundred forty-nine thousand, one hundred twenty".