28639563419715 has 32 divisors (see below), whose sum is σ = 45949503398400. Its totient is φ = 15232423342080.

The previous prime is 28639563419713. The next prime is 28639563419743. The reversal of 28639563419715 is 51791436593682.

It is not a de Polignac number, because 28639563419715 - 2¹ = 28639563419713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28639563419715.

It is not an unprimeable number, because it can be changed into a prime (28639563419713) 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, 6291876 + ... + 9842094.

It is an arithmetic number, because the mean of its divisors is an integer number (1435921981200).

Almost surely, 2^{28639563419715} is an apocalyptic number.

28639563419715 is a deficient number, since it is larger than the sum of its proper divisors (17309939978685).

28639563419715 is a wasteful number, since it uses less digits than its factorization.

28639563419715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551707.

The product of its digits is 293932800, while the sum is 69.

The spelling of 28639563419715 in words is "twenty-eight trillion, six hundred thirty-nine billion, five hundred sixty-three million, four hundred nineteen thousand, seven hundred fifteen".