50505554999991 has 64 divisors (see below), whose sum is σ = 83908118970368. Its totient is φ = 26312000093568.

The previous prime is 50505554999981. The next prime is 50505555000023. The reversal of 50505554999991 is 19999945550505.

It is not a de Polignac number, because 50505554999991 - 2¹⁴ = 50505554983607 is a prime.

It is a super-2 number, since 2×50505554999991² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50505554999981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4465470 + ... + 10997796.

It is an arithmetic number, because the mean of its divisors is an integer number (1311064358912).

Almost surely, 2^{50505554999991} is an apocalyptic number.

50505554999991 is a deficient number, since it is larger than the sum of its proper divisors (33402563970377).

50505554999991 is a wasteful number, since it uses less digits than its factorization.

50505554999991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532700.

The product of its (nonzero) digits is 738112500, while the sum is 75.

The spelling of 50505554999991 in words is "fifty trillion, five hundred five billion, five hundred fifty-four million, nine hundred ninety-nine thousand, nine hundred ninety-one".