28075097229701 has 4 divisors (see below), whose sum is σ = 28083727757772. Its totient is φ = 28066466701632.

The previous prime is 28075097229617. The next prime is 28075097229733. The reversal of 28075097229701 is 10792279057082.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20709789741601 + 7365307488100 = 4550801^2 + 2713910^2 .

It is a cyclic number.

It is not a de Polignac number, because 28075097229701 - 2¹⁰ = 28075097228677 is a prime.

It is a super-2 number, since 2×28075097229701² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075097229401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4315259156 + ... + 4315265661.

It is an arithmetic number, because the mean of its divisors is an integer number (7020931939443).

Almost surely, 2^{28075097229701} is an apocalyptic number.

It is an amenable number.

28075097229701 is a deficient number, since it is larger than the sum of its proper divisors (8630528071).

28075097229701 is an equidigital number, since it uses as much as digits as its factorization.

28075097229701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8630528070.

The product of its (nonzero) digits is 8890560, while the sum is 59.

The spelling of 28075097229701 in words is "twenty-eight trillion, seventy-five billion, ninety-seven million, two hundred twenty-nine thousand, seven hundred one".