28405553319 has 72 divisors (see below), whose sum is σ = 48677297760. Its totient is φ = 15855649920.

The previous prime is 28405553279. The next prime is 28405553347. The reversal of 28405553319 is 91335550482.

28405553319 is a `hidden beast` number, since 2 + 84 + 0 + 5 + 553 + 3 + 19 = 666.

It is not a de Polignac number, because 28405553319 - 2²⁰ = 28404504743 is a prime.

It is a super-2 number, since 2×28405553319² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28405553359) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7118977 + ... + 7122965.

It is an arithmetic number, because the mean of its divisors is an integer number (676073580).

Almost surely, 2^28405553319 is an apocalyptic number.

28405553319 is a deficient number, since it is larger than the sum of its proper divisors (20271744441).

28405553319 is a wasteful number, since it uses less digits than its factorization.

28405553319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533 (or 4519 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 28405553319 in words is "twenty-eight billion, four hundred five million, five hundred fifty-three thousand, three hundred nineteen".