20038097478 has 64 divisors (see below), whose sum is σ = 46473799680. Its totient is φ = 5641270272.

The previous prime is 20038097477. The next prime is 20038097503. The reversal of 20038097478 is 87479083002.

20038097478 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20038097477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3974083 + ... + 3979121.

It is an arithmetic number, because the mean of its divisors is an integer number (726153120).

Almost surely, 2^20038097478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20038097478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23236899840).

20038097478 is an abundant number, since it is smaller than the sum of its proper divisors (26435702202).

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

20038097478 is a wasteful number, since it uses less digits than its factorization.

20038097478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6421.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 20038097478 in words is "twenty billion, thirty-eight million, ninety-seven thousand, four hundred seventy-eight".