28055838537 has 20 divisors (see below), whose sum is σ = 42130023936. Its totient is φ = 18605955960.

The previous prime is 28055838509. The next prime is 28055838583. The reversal of 28055838537 is 73583855082.

It is a happy number.

28055838537 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 583 + 8 + 53 + 7 = 666.

It is not a de Polignac number, because 28055838537 - 2¹² = 28055834441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28055838137) 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, 891253 + ... + 922194.

Almost surely, 2^28055838537 is an apocalyptic number.

28055838537 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28055838537 is a deficient number, since it is larger than the sum of its proper divisors (14074185399).

28055838537 is a wasteful number, since it uses less digits than its factorization.

28055838537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813650 (or 1813641 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 54.

The spelling of 28055838537 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-eight thousand, five hundred thirty-seven".