28002400002605 has 16 divisors (see below), whose sum is σ = 38403438737664. Its totient is φ = 19201572063360.

The previous prime is 28002400002593. The next prime is 28002400002617. The reversal of 28002400002605 is 50620000420082.

It is an interprime number because it is at equal distance from previous prime (28002400002593) and next prime (28002400002617).

It is not a de Polignac number, because 28002400002605 - 2²⁰ = 28002398954029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8677889 + ... + 11459081.

It is an arithmetic number, because the mean of its divisors is an integer number (2400214921104).

Almost surely, 2^{28002400002605} is an apocalyptic number.

It is an amenable number.

28002400002605 is a deficient number, since it is larger than the sum of its proper divisors (10401038735059).

28002400002605 is a wasteful number, since it uses less digits than its factorization.

28002400002605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068876.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 28002400002605 its reverse (50620000420082), we get a palindrome (78622400422687).

The spelling of 28002400002605 in words is "twenty-eight trillion, two billion, four hundred million, two thousand, six hundred five".