78284135133 has 12 divisors (see below), whose sum is σ = 114439459680. Its totient is φ = 51560634696.

The previous prime is 78284135099. The next prime is 78284135143. The reversal of 78284135133 is 33153148287.

78284135133 is a `hidden beast` number, since 78 + 28 + 41 + 3 + 513 + 3 = 666.

It is not a de Polignac number, because 78284135133 - 2¹³ = 78284126941 is a prime.

It is a super-2 number, since 2×78284135133² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78284135143) 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, 52398273 + ... + 52399766.

It is an arithmetic number, because the mean of its divisors is an integer number (9536621640).

Almost surely, 2^78284135133 is an apocalyptic number.

It is an amenable number.

78284135133 is a deficient number, since it is larger than the sum of its proper divisors (36155324547).

78284135133 is a wasteful number, since it uses less digits than its factorization.

78284135133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104798128 (or 104798125 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 78284135133 in words is "seventy-eight billion, two hundred eighty-four million, one hundred thirty-five thousand, one hundred thirty-three".