28101662613 has 16 divisors (see below), whose sum is σ = 41698096000. Its totient is φ = 18704740320.

The previous prime is 28101662599. The next prime is 28101662647. The reversal of 28101662613 is 31626610182.

It is a happy number.

28101662613 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 16 + 626 + 13 = 666.

It is not a de Polignac number, because 28101662613 - 2⁵ = 28101662581 is a prime.

It is a super-2 number, since 2×28101662613² (a number of 22 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 (28101262613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807688 + ... + 841761.

It is an arithmetic number, because the mean of its divisors is an integer number (2606131000).

Almost surely, 2^28101662613 is an apocalyptic number.

It is an amenable number.

28101662613 is a deficient number, since it is larger than the sum of its proper divisors (13596433387).

28101662613 is a wasteful number, since it uses less digits than its factorization.

28101662613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650089 (or 1650083 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 28101662613 in words is "twenty-eight billion, one hundred one million, six hundred sixty-two thousand, six hundred thirteen".