1618554960000 has 1920 divisors, whose sum is σ = 6827543236800. Its totient is φ = 378846720000.

The previous prime is 1618554959953. The next prime is 1618554960007. The reversal of 1618554960000 is 694558161.

1618554960000 is a `hidden beast` number, since 1 + 6 + 1 + 8 + 554 + 96 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1618554960007) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 55812239986 + ... + 55812240014.

Almost surely, 2^{1618554960000} is an apocalyptic number.

1618554960000 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 1618554960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3413771618400).

1618554960000 is an abundant number, since it is smaller than the sum of its proper divisors (5208988276800).

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

1618554960000 is an frugal number, since it uses more digits than its factorization.

1618554960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 1618554960000 in words is "one trillion, six hundred eighteen billion, five hundred fifty-four million, nine hundred sixty thousand".