28000055030055 has 32 divisors (see below), whose sum is σ = 47159019072000. Its totient is φ = 14147086730112.

The previous prime is 28000055030053. The next prime is 28000055030107. The reversal of 28000055030055 is 55003055000082.

It is not a de Polignac number, because 28000055030055 - 2¹ = 28000055030053 is a prime.

It is a super-2 number, since 2×28000055030055² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28000055029998 and 28000055030025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000055030053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12265921 + ... + 14368469.

It is an arithmetic number, because the mean of its divisors is an integer number (1473719346000).

Almost surely, 2^{28000055030055} is an apocalyptic number.

28000055030055 is a deficient number, since it is larger than the sum of its proper divisors (19158964041945).

28000055030055 is a wasteful number, since it uses less digits than its factorization.

28000055030055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149303.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 28000055030055 in words is "twenty-eight trillion, fifty-five million, thirty thousand, fifty-five".