20153143463 has 4 divisors (see below), whose sum is σ = 20311829760. Its totient is φ = 19994457168.

The previous prime is 20153143457. The next prime is 20153143487. The reversal of 20153143463 is 36434135102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20153143463 - 2¹² = 20153139367 is a prime.

It is a super-2 number, since 2×20153143463² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153143163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79342958 + ... + 79343211.

It is an arithmetic number, because the mean of its divisors is an integer number (5077957440).

Almost surely, 2^20153143463 is an apocalyptic number.

20153143463 is a deficient number, since it is larger than the sum of its proper divisors (158686297).

20153143463 is a wasteful number, since it uses less digits than its factorization.

20153143463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158686296.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 20153143463 its reverse (36434135102), we get a palindrome (56587278565).

The spelling of 20153143463 in words is "twenty billion, one hundred fifty-three million, one hundred forty-three thousand, four hundred sixty-three".