28865571552463 has 32 divisors (see below), whose sum is σ = 29961947381760. Its totient is φ = 27787488566400.

The previous prime is 28865571552431. The next prime is 28865571552469. The reversal of 28865571552463 is 36425517556882.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28865571552463 - 2⁵ = 28865571552431 is a prime.

It is a super-2 number, since 2×28865571552463² (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 (28865571552469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2265203670 + ... + 2265216412.

It is an arithmetic number, because the mean of its divisors is an integer number (936310855680).

Almost surely, 2^{28865571552463} is an apocalyptic number.

28865571552463 is a deficient number, since it is larger than the sum of its proper divisors (1096375829297).

28865571552463 is a wasteful number, since it uses less digits than its factorization.

28865571552463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14527.

The product of its digits is 483840000, while the sum is 67.

The spelling of 28865571552463 in words is "twenty-eight trillion, eight hundred sixty-five billion, five hundred seventy-one million, five hundred fifty-two thousand, four hundred sixty-three".