20153343506 has 8 divisors (see below), whose sum is σ = 30612673920. Its totient is φ = 9949118868.

The previous prime is 20153343479. The next prime is 20153343547. The reversal of 20153343506 is 60534335102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 63776246 + ... + 63776561.

It is an arithmetic number, because the mean of its divisors is an integer number (3826584240).

Almost surely, 2^20153343506 is an apocalyptic number.

20153343506 is a deficient number, since it is larger than the sum of its proper divisors (10459330414).

20153343506 is a wasteful number, since it uses less digits than its factorization.

20153343506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127552888.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 20153343506 its reverse (60534335102), we get a palindrome (80687678608).

The spelling of 20153343506 in words is "twenty billion, one hundred fifty-three million, three hundred forty-three thousand, five hundred six".