28357612668111 has 32 divisors (see below), whose sum is σ = 38927940657088. Its totient is φ = 18348757217280.

The previous prime is 28357612668103. The next prime is 28357612668181. The reversal of 28357612668111 is 11186621675382.

It is a happy number.

It is not a de Polignac number, because 28357612668111 - 2³ = 28357612668103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28357612668181) 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, 76085865 + ... + 76457661.

It is an arithmetic number, because the mean of its divisors is an integer number (1216498145534).

Almost surely, 2^{28357612668111} is an apocalyptic number.

28357612668111 is a deficient number, since it is larger than the sum of its proper divisors (10570327988977).

28357612668111 is a wasteful number, since it uses less digits than its factorization.

28357612668111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373531.

The product of its digits is 5806080, while the sum is 57.

The spelling of 28357612668111 in words is "twenty-eight trillion, three hundred fifty-seven billion, six hundred twelve million, six hundred sixty-eight thousand, one hundred eleven".