28131352776854 has 32 divisors (see below), whose sum is σ = 44710187090400. Its totient is φ = 13229106024960.

The previous prime is 28131352776851. The next prime is 28131352776929. The reversal of 28131352776854 is 45867725313182.

It is a happy number.

It is a super-2 number, since 2×28131352776854² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131352776851) 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, 927157724 + ... + 927188064.

It is an arithmetic number, because the mean of its divisors is an integer number (1397193346575).

Almost surely, 2^{28131352776854} is an apocalyptic number.

28131352776854 is a deficient number, since it is larger than the sum of its proper divisors (16578834313546).

28131352776854 is a wasteful number, since it uses less digits than its factorization.

28131352776854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48368.

The product of its digits is 67737600, while the sum is 62.

The spelling of 28131352776854 in words is "twenty-eight trillion, one hundred thirty-one billion, three hundred fifty-two million, seven hundred seventy-six thousand, eight hundred fifty-four".