20378454020 has 24 divisors (see below), whose sum is σ = 44655395904. Its totient is φ = 7796973536.

The previous prime is 20378454017. The next prime is 20378454029. The reversal of 20378454020 is 2045487302.

It is not an unprimeable number, because it can be changed into a prime (20378454029) 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, 22150034 + ... + 22150953.

It is an arithmetic number, because the mean of its divisors is an integer number (1860641496).

Almost surely, 2^20378454020 is an apocalyptic number.

20378454020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20378454020 is an abundant number, since it is smaller than the sum of its proper divisors (24276941884).

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

20378454020 is a wasteful number, since it uses less digits than its factorization.

20378454020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44301019 (or 44301017 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 20378454020 in words is "twenty billion, three hundred seventy-eight million, four hundred fifty-four thousand, twenty".