28660141078 has 4 divisors (see below), whose sum is σ = 42990211620. Its totient is φ = 14330070538.

The previous prime is 28660141061. The next prime is 28660141117. The reversal of 28660141078 is 87014106682.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28660141078² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7165035268 + ... + 7165035271.

It is an arithmetic number, because the mean of its divisors is an integer number (10747552905).

Almost surely, 2^28660141078 is an apocalyptic number.

28660141078 is a deficient number, since it is larger than the sum of its proper divisors (14330070542).

28660141078 is a wasteful number, since it uses less digits than its factorization.

28660141078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14330070541.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 28660141078 in words is "twenty-eight billion, six hundred sixty million, one hundred forty-one thousand, seventy-eight".