28465202708451 has 12 divisors (see below), whose sum is σ = 41116674512160. Its totient is φ = 18976676913360.

The previous prime is 28465202708377. The next prime is 28465202708471. The reversal of 28465202708451 is 15480720256482.

28465202708451 is a `hidden beast` number, since 2 + 8 + 4 + 6 + 520 + 2 + 70 + 8 + 45 + 1 = 666.

It is not a de Polignac number, because 28465202708451 - 2¹⁵ = 28465202675683 is a prime.

It is a super-2 number, since 2×28465202708451² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28465202708471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8953516 + ... + 11708793.

It is an arithmetic number, because the mean of its divisors is an integer number (3426389542680).

Almost surely, 2^{28465202708451} is an apocalyptic number.

28465202708451 is a deficient number, since it is larger than the sum of its proper divisors (12651471803709).

28465202708451 is a wasteful number, since it uses less digits than its factorization.

28465202708451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20815386 (or 20815383 counting only the distinct ones).

The product of its (nonzero) digits is 8601600, while the sum is 54.

The spelling of 28465202708451 in words is "twenty-eight trillion, four hundred sixty-five billion, two hundred two million, seven hundred eight thousand, four hundred fifty-one".