20433242151 has 24 divisors (see below), whose sum is σ = 34448753664. Its totient is φ = 11427708240.

The previous prime is 20433242047. The next prime is 20433242177. The reversal of 20433242151 is 15124233402.

20433242151 is a `hidden beast` number, since 204 + 3 + 32 + 421 + 5 + 1 = 666.

It is not a de Polignac number, because 20433242151 - 2⁷ = 20433242023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433242551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3447435 + ... + 3453356.

It is an arithmetic number, because the mean of its divisors is an integer number (1435364736).

Almost surely, 2^20433242151 is an apocalyptic number.

20433242151 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20433242151 is a deficient number, since it is larger than the sum of its proper divisors (14015511513).

20433242151 is a wasteful number, since it uses less digits than its factorization.

20433242151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900851 (or 6900848 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20433242151 its reverse (15124233402), we get a palindrome (35557475553).

The spelling of 20433242151 in words is "twenty billion, four hundred thirty-three million, two hundred forty-two thousand, one hundred fifty-one".