28378805093877 has 8 divisors (see below), whose sum is σ = 43243893476416. Its totient is φ = 16216460053632.

The previous prime is 28378805093867. The next prime is 28378805093923. The reversal of 28378805093877 is 77839050887382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28378805093877 - 2¹¹ = 28378805091829 is a prime.

It is a super-2 number, since 2×28378805093877² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28378805093799 and 28378805093808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28378805093867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675685835548 + ... + 675685835589.

It is an arithmetic number, because the mean of its divisors is an integer number (5405486684552).

Almost surely, 2^{28378805093877} is an apocalyptic number.

It is an amenable number.

28378805093877 is a deficient number, since it is larger than the sum of its proper divisors (14865088382539).

28378805093877 is a wasteful number, since it uses less digits than its factorization.

28378805093877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351371671147.

The product of its (nonzero) digits is 1137991680, while the sum is 75.

The spelling of 28378805093877 in words is "twenty-eight trillion, three hundred seventy-eight billion, eight hundred five million, ninety-three thousand, eight hundred seventy-seven".