1994101770240 has 384 divisors, whose sum is σ = 7178213952000. Its totient is φ = 525023576064.

The previous prime is 1994101770217. The next prime is 1994101770253. The reversal of 1994101770240 is 420771014991.

1994101770240 is a `hidden beast` number, since 199 + 410 + 1 + 7 + 7 + 0 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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

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, 21796272 + ... + 21887568.

It is an arithmetic number, because the mean of its divisors is an integer number (18693265500).

Almost surely, 2^{1994101770240} is an apocalyptic number.

1994101770240 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 1994101770240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3589106976000).

1994101770240 is an abundant number, since it is smaller than the sum of its proper divisors (5184112181760).

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

1994101770240 is an equidigital number, since it uses as much as digits as its factorization.

1994101770240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91412 (or 91386 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 1994101770240 in words is "one trillion, nine hundred ninety-four billion, one hundred one million, seven hundred seventy thousand, two hundred forty".