20087717955 has 16 divisors (see below), whose sum is σ = 32593031424. Its totient is φ = 10562555360.

The previous prime is 20087717921. The next prime is 20087717977. The reversal of 20087717955 is 55971778002.

It is not a de Polignac number, because 20087717955 - 2⁷ = 20087717827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20087717898 and 20087717907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9429789 + ... + 9431918.

It is an arithmetic number, because the mean of its divisors is an integer number (2037064464).

Almost surely, 2^20087717955 is an apocalyptic number.

20087717955 is a deficient number, since it is larger than the sum of its proper divisors (12505313469).

20087717955 is a wasteful number, since it uses less digits than its factorization.

20087717955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18861786.

The product of its (nonzero) digits is 1234800, while the sum is 51.

The spelling of 20087717955 in words is "twenty billion, eighty-seven million, seven hundred seventeen thousand, nine hundred fifty-five".