20555546137 has 16 divisors (see below), whose sum is σ = 24196211200. Its totient is φ = 17093654208.

The previous prime is 20555546119. The next prime is 20555546149. The reversal of 20555546137 is 73164555502.

It is a cyclic number.

It is not a de Polignac number, because 20555546137 - 2²³ = 20547157529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20555546093 and 20555546102.

It is not an unprimeable number, because it can be changed into a prime (20555546117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23313 + ... + 204094.

It is an arithmetic number, because the mean of its divisors is an integer number (1512263200).

Almost surely, 2^20555546137 is an apocalyptic number.

It is an amenable number.

20555546137 is a deficient number, since it is larger than the sum of its proper divisors (3640665063).

20555546137 is a wasteful number, since it uses less digits than its factorization.

20555546137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227800.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 20555546137 in words is "twenty billion, five hundred fifty-five million, five hundred forty-six thousand, one hundred thirty-seven".