20651455433 has 8 divisors (see below), whose sum is σ = 24843856320. Its totient is φ = 16769602800.

The previous prime is 20651455427. The next prime is 20651455439. The reversal of 20651455433 is 33455415602.

It is an interprime number because it is at equal distance from previous prime (20651455427) and next prime (20651455439).

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

It is a cyclic number.

It is not a de Polignac number, because 20651455433 - 2²⁶ = 20584346569 is a prime.

It is a super-2 number, since 2×20651455433² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20651455439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77636918 + ... + 77637183.

It is an arithmetic number, because the mean of its divisors is an integer number (3105482040).

Almost surely, 2^20651455433 is an apocalyptic number.

It is an amenable number.

20651455433 is a deficient number, since it is larger than the sum of its proper divisors (4192400887).

20651455433 is a wasteful number, since it uses less digits than its factorization.

20651455433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155274127.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 20651455433 in words is "twenty billion, six hundred fifty-one million, four hundred fifty-five thousand, four hundred thirty-three".