20013574434 has 32 divisors (see below), whose sum is σ = 46520663040. Its totient is φ = 5621245392.

The previous prime is 20013574433. The next prime is 20013574439. The reversal of 20013574434 is 43447531002.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20013574395 and 20013574404.

It is not an unprimeable number, because it can be changed into a prime (20013574433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4035774 + ... + 4040729.

It is an arithmetic number, because the mean of its divisors is an integer number (1453770720).

Almost surely, 2^20013574434 is an apocalyptic number.

20013574434 is an abundant number, since it is smaller than the sum of its proper divisors (26507088606).

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

20013574434 is a wasteful number, since it uses less digits than its factorization.

20013574434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8076574.

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 20013574434 in words is "twenty billion, thirteen million, five hundred seventy-four thousand, four hundred thirty-four".