20361402064 has 20 divisors (see below), whose sum is σ = 39554318560. Its totient is φ = 10153836000.

The previous prime is 20361402059. The next prime is 20361402067. The reversal of 20361402064 is 46020416302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361402067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672812 + ... + 1684939.

It is an arithmetic number, because the mean of its divisors is an integer number (1977715928).

Almost surely, 2^20361402064 is an apocalyptic number.

It is an amenable number.

20361402064 is a deficient number, since it is larger than the sum of its proper divisors (19192916496).

20361402064 is a wasteful number, since it uses less digits than its factorization.

20361402064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3358138 (or 3358132 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20361402064 its reverse (46020416302), we get a palindrome (66381818366).

The spelling of 20361402064 in words is "twenty billion, three hundred sixty-one million, four hundred two thousand, sixty-four".