28769533645 has 8 divisors (see below), whose sum is σ = 34584764256. Its totient is φ = 22974744336.

The previous prime is 28769533633. The next prime is 28769533657. The reversal of 28769533645 is 54633596782.

It is an interprime number because it is at equal distance from previous prime (28769533633) and next prime (28769533657).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28769533645 is a prime.

It is a super-3 number, since 3×28769533645³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28769533645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5107227 + ... + 5112856.

It is an arithmetic number, because the mean of its divisors is an integer number (4323095532).

Almost surely, 2^28769533645 is an apocalyptic number.

It is an amenable number.

28769533645 is a deficient number, since it is larger than the sum of its proper divisors (5815230611).

28769533645 is a wasteful number, since it uses less digits than its factorization.

28769533645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10220651.

The product of its digits is 32659200, while the sum is 58.

The spelling of 28769533645 in words is "twenty-eight billion, seven hundred sixty-nine million, five hundred thirty-three thousand, six hundred forty-five".