1815618578060 has 96 divisors (see below), whose sum is σ = 4479534057600. Its totient is φ = 605094340608.

The previous prime is 1815618578057. The next prime is 1815618578107. The reversal of 1815618578060 is 608758165181.

It is a junction number, because it is equal to n+sod(n) for n = 1815618577987 and 1815618578005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5266754 + ... + 5600886.

It is an arithmetic number, because the mean of its divisors is an integer number (46661813100).

Almost surely, 2^{1815618578060} is an apocalyptic number.

1815618578060 is a gapful number since it is divisible by the number (10) 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 1815618578060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2239767028800).

1815618578060 is an abundant number, since it is smaller than the sum of its proper divisors (2663915479540).

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

1815618578060 is a wasteful number, since it uses less digits than its factorization.

1815618578060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335235 (or 335233 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 56.

The spelling of 1815618578060 in words is "one trillion, eight hundred fifteen billion, six hundred eighteen million, five hundred seventy-eight thousand, sixty".