28625622516543 has 128 divisors (see below), whose sum is σ = 44868334551040. Its totient is φ = 16076024640000.

The previous prime is 28625622516523. The next prime is 28625622516559. The reversal of 28625622516543 is 34561522652682.

It is not a de Polignac number, because 28625622516543 - 2⁹ = 28625622516031 is a prime.

It is a super-2 number, since 2×28625622516543² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28625622516523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4892429568 + ... + 4892435418.

It is an arithmetic number, because the mean of its divisors is an integer number (350533863680).

Almost surely, 2^{28625622516543} is an apocalyptic number.

28625622516543 is a deficient number, since it is larger than the sum of its proper divisors (16242712034497).

28625622516543 is a wasteful number, since it uses less digits than its factorization.

28625622516543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861.

The product of its digits is 41472000, while the sum is 57.

The spelling of 28625622516543 in words is "twenty-eight trillion, six hundred twenty-five billion, six hundred twenty-two million, five hundred sixteen thousand, five hundred forty-three".