30215856478 has 16 divisors (see below), whose sum is σ = 45465585984. Its totient is φ = 15060695040.

The previous prime is 30215856347. The next prime is 30215856479. The reversal of 30215856478 is 87465851203.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30215856479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225326 + ... + 2238862.

It is an arithmetic number, because the mean of its divisors is an integer number (2841599124).

Almost surely, 2^30215856478 is an apocalyptic number.

30215856478 is a deficient number, since it is larger than the sum of its proper divisors (15249729506).

30215856478 is a wasteful number, since it uses less digits than its factorization.

30215856478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16947.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 30215856478 in words is "thirty billion, two hundred fifteen million, eight hundred fifty-six thousand, four hundred seventy-eight".