55205202001887 has 20 divisors (see below), whose sum is σ = 94248034459216. Its totient is φ = 31545829715040.

The previous prime is 55205202001879. The next prime is 55205202001907. The reversal of 55205202001887 is 78810020250255.

55205202001887 is a `hidden beast` number, since 5 + 5 + 20 + 520 + 20 + 0 + 1 + 8 + 87 = 666.

It is not a de Polignac number, because 55205202001887 - 2³ = 55205202001879 is a prime.

It is a super-2 number, since 2×55205202001887² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55205202001487) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48681835414 + ... + 48681836547.

Almost surely, 2^{55205202001887} is an apocalyptic number.

55205202001887 is a deficient number, since it is larger than the sum of its proper divisors (39042832457329).

55205202001887 is an equidigital number, since it uses as much as digits as its factorization.

55205202001887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97363671980 (or 97363671971 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The spelling of 55205202001887 in words is "fifty-five trillion, two hundred five billion, two hundred two million, one thousand, eight hundred eighty-seven".