28135670618 has 16 divisors (see below), whose sum is σ = 47525356800. Its totient is φ = 12376394400.

The previous prime is 28135670617. The next prime is 28135670639. The reversal of 28135670618 is 81607653182.

It is a super-2 number, since 2×28135670618² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28135670617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20626643 + ... + 20628006.

It is an arithmetic number, because the mean of its divisors is an integer number (2970334800).

Almost surely, 2^28135670618 is an apocalyptic number.

28135670618 is a deficient number, since it is larger than the sum of its proper divisors (19389686182).

28135670618 is a wasteful number, since it uses less digits than its factorization.

28135670618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41254693.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 28135670618 in words is "twenty-eight billion, one hundred thirty-five million, six hundred seventy thousand, six hundred eighteen".