18078956256 has 192 divisors, whose sum is σ = 49265314560. Its totient is φ = 5802762240.

The previous prime is 18078956177. The next prime is 18078956257. The reversal of 18078956256 is 65265987081.

It is a junction number, because it is equal to n+sod(n) for n = 18078956196 and 18078956205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18078956257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75016296 + ... + 75016536.

It is an arithmetic number, because the mean of its divisors is an integer number (256590180).

Almost surely, 2^18078956256 is an apocalyptic number.

18078956256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18078956256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24632657280).

18078956256 is an abundant number, since it is smaller than the sum of its proper divisors (31186358304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18078956256 is a wasteful number, since it uses less digits than its factorization.

18078956256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 57.

The spelling of 18078956256 in words is "eighteen billion, seventy-eight million, nine hundred fifty-six thousand, two hundred fifty-six".