28075152272642 has 4 divisors (see below), whose sum is σ = 42112728408966. Its totient is φ = 14037576136320.

The previous prime is 28075152272611. The next prime is 28075152272677. The reversal of 28075152272642 is 24627225157082.

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

It can be written as a sum of positive squares in only one way, i.e., 27727501707481 + 347650565161 = 5265691^2 + 589619^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7018788068159 + ... + 7018788068162.

Almost surely, 2^{28075152272642} is an apocalyptic number.

28075152272642 is a deficient number, since it is larger than the sum of its proper divisors (14037576136324).

28075152272642 is a wasteful number, since it uses less digits than its factorization.

28075152272642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14037576136323.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 28075152272642 in words is "twenty-eight trillion, seventy-five billion, one hundred fifty-two million, two hundred seventy-two thousand, six hundred forty-two".