28620651499 has 4 divisors (see below), whose sum is σ = 31222528920. Its totient is φ = 26018774080.

The previous prime is 28620651481. The next prime is 28620651517. The reversal of 28620651499 is 99415602682.

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

It is an interprime number because it is at equal distance from previous prime (28620651481) and next prime (28620651517).

It is a cyclic number.

It is not a de Polignac number, because 28620651499 - 2⁵ = 28620651467 is a prime.

It is a super-3 number, since 3×28620651499³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28620651419) 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 3 ways as a sum of consecutive naturals, for example, 1300938694 + ... + 1300938715.

It is an arithmetic number, because the mean of its divisors is an integer number (7805632230).

Almost surely, 2^28620651499 is an apocalyptic number.

28620651499 is a deficient number, since it is larger than the sum of its proper divisors (2601877421).

28620651499 is a wasteful number, since it uses less digits than its factorization.

28620651499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601877420.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 28620651499 in words is "twenty-eight billion, six hundred twenty million, six hundred fifty-one thousand, four hundred ninety-nine".