20145343392 has 72 divisors (see below), whose sum is σ = 57700581120. Its totient is φ = 6666791040.

The previous prime is 20145343381. The next prime is 20145343411. The reversal of 20145343392 is 29334354102.

20145343392 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 534 + 33 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211584 + ... + 291647.

It is an arithmetic number, because the mean of its divisors is an integer number (801396960).

Almost surely, 2^20145343392 is an apocalyptic number.

It is an amenable number.

20145343392 is an abundant number, since it is smaller than the sum of its proper divisors (37555237728).

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

20145343392 is a wasteful number, since it uses less digits than its factorization.

20145343392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503386 (or 503375 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

Adding to 20145343392 its reverse (29334354102), we get a palindrome (49479697494).

The spelling of 20145343392 in words is "twenty billion, one hundred forty-five million, three hundred forty-three thousand, three hundred ninety-two".