20481144402 has 16 divisors (see below), whose sum is σ = 41422540320. Its totient is φ = 6750339552.

The previous prime is 20481144337. The next prime is 20481144421. The reversal of 20481144402 is 20444118402.

It is a self number, because there is not a number n which added to its sum of digits gives 20481144402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19176568 + ... + 19177635.

It is an arithmetic number, because the mean of its divisors is an integer number (2588908770).

Almost surely, 2^20481144402 is an apocalyptic number.

20481144402 is an abundant number, since it is smaller than the sum of its proper divisors (20941395918).

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

20481144402 is a wasteful number, since it uses less digits than its factorization.

20481144402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38354297.

The product of its (nonzero) digits is 8192, while the sum is 30.

The spelling of 20481144402 in words is "twenty billion, four hundred eighty-one million, one hundred forty-four thousand, four hundred two".