20550254051 has 8 divisors (see below), whose sum is σ = 21224112000. Its totient is φ = 19877080320.

The previous prime is 20550254047. The next prime is 20550254057. The reversal of 20550254051 is 15045205502.

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 20550254051 - 2² = 20550254047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20550254057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109646 + ... + 230483.

It is an arithmetic number, because the mean of its divisors is an integer number (2653014000).

Almost surely, 2^20550254051 is an apocalyptic number.

20550254051 is a deficient number, since it is larger than the sum of its proper divisors (673857949).

20550254051 is a wasteful number, since it uses less digits than its factorization.

20550254051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342109.

The product of its (nonzero) digits is 10000, while the sum is 29.

Adding to 20550254051 its reverse (15045205502), we get a palindrome (35595459553).

The spelling of 20550254051 in words is "twenty billion, five hundred fifty million, two hundred fifty-four thousand, fifty-one".