20693450364 has 12 divisors (see below), whose sum is σ = 48284717544. Its totient is φ = 6897816784.

The previous prime is 20693450353. The next prime is 20693450381. The reversal of 20693450364 is 46305439602.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862227087 + ... + 862227110.

It is an arithmetic number, because the mean of its divisors is an integer number (4023726462).

Almost surely, 2^20693450364 is an apocalyptic number.

It is an amenable number.

20693450364 is an abundant number, since it is smaller than the sum of its proper divisors (27591267180).

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

20693450364 is a wasteful number, since it uses less digits than its factorization.

20693450364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724454204 (or 1724454202 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 20693450364 its reverse (46305439602), we get a palindrome (66998889966).

The spelling of 20693450364 in words is "twenty billion, six hundred ninety-three million, four hundred fifty thousand, three hundred sixty-four".