28237997277105 has 96 divisors (see below), whose sum is σ = 57736702485504. Its totient is φ = 11449044672000.

The previous prime is 28237997277013. The next prime is 28237997277181. The reversal of 28237997277105 is 50177279973282.

It is a happy number.

It is not a de Polignac number, because 28237997277105 - 2¹⁰ = 28237997276081 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28237997277105.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5330451 + ... + 9213560.

It is an arithmetic number, because the mean of its divisors is an integer number (601423984224).

Almost surely, 2^{28237997277105} is an apocalyptic number.

It is an amenable number.

28237997277105 is an abundant number, since it is smaller than the sum of its proper divisors (29498705208399).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28237997277105 is a wasteful number, since it uses less digits than its factorization.

28237997277105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14544119 (or 14544078 counting only the distinct ones).

The product of its (nonzero) digits is 186701760, while the sum is 69.

The spelling of 28237997277105 in words is "twenty-eight trillion, two hundred thirty-seven billion, nine hundred ninety-seven million, two hundred seventy-seven thousand, one hundred five".