20060055551 has 2 divisors, whose sum is σ = 20060055552. Its totient is φ = 20060055550.

The previous prime is 20060055541. The next prime is 20060055553. The reversal of 20060055551 is 15555006002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20060055551 - 2²² = 20055861247 is a prime.

Together with 20060055553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20060055553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030027775 + 10030027776.

It is an arithmetic number, because the mean of its divisors is an integer number (10030027776).

Almost surely, 2^20060055551 is an apocalyptic number.

20060055551 is a deficient number, since it is larger than the sum of its proper divisors (1).

20060055551 is an equidigital number, since it uses as much as digits as its factorization.

20060055551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 20060055551 in words is "twenty billion, sixty million, fifty-five thousand, five hundred fifty-one".