28061403055 has 48 divisors (see below), whose sum is σ = 40323769920. Its totient is φ = 18683578368.

The previous prime is 28061403053. The next prime is 28061403079. The reversal of 28061403055 is 55030416082.

It is not a de Polignac number, because 28061403055 - 2¹ = 28061403053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28061403055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28061403053) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1248406 + ... + 1270684.

It is an arithmetic number, because the mean of its divisors is an integer number (840078540).

Almost surely, 2^28061403055 is an apocalyptic number.

28061403055 is a deficient number, since it is larger than the sum of its proper divisors (12262366865).

28061403055 is a wasteful number, since it uses less digits than its factorization.

28061403055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22448 (or 22441 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 28061403055 in words is "twenty-eight billion, sixty-one million, four hundred three thousand, fifty-five".