30878213553 has 40 divisors (see below), whose sum is σ = 51071196000. Its totient is φ = 18434718720.

The previous prime is 30878213537. The next prime is 30878213557. The reversal of 30878213553 is 35531287803.

30878213553 is a `hidden beast` number, since 3 + 0 + 8 + 7 + 82 + 13 + 553 = 666.

It is not a de Polignac number, because 30878213553 - 2⁴ = 30878213537 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30878213499 and 30878213508.

It is not an unprimeable number, because it can be changed into a prime (30878213557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 198928 + ... + 318321.

It is an arithmetic number, because the mean of its divisors is an integer number (1276779900).

Almost surely, 2^30878213553 is an apocalyptic number.

30878213553 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30878213553 is a deficient number, since it is larger than the sum of its proper divisors (20192982447).

30878213553 is a wasteful number, since it uses less digits than its factorization.

30878213553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517339 (or 517330 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 30878213553 in words is "thirty billion, eight hundred seventy-eight million, two hundred thirteen thousand, five hundred fifty-three".