1204563378690 has 512 divisors, whose sum is σ = 3846902906880. Its totient is φ = 262525536000.

The previous prime is 1204563378643. The next prime is 1204563378703. The reversal of 1204563378690 is 968733654021.

1204563378690 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 563 + 3 + 78 + 6 + 9 + 0 = 666.

It is a super-2 number, since 2×1204563378690² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 617407215 + ... + 617409165.

It is an arithmetic number, because the mean of its divisors is an integer number (7513482240).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1204563378690 = 2409126757380, but 3⋅1204563378690 = 3613690136070 is not.

Almost surely, 2^{1204563378690} is an apocalyptic number.

1204563378690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1204563378690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1923451453440).

1204563378690 is an abundant number, since it is smaller than the sum of its proper divisors (2642339528190).

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

1204563378690 is a wasteful number, since it uses less digits than its factorization.

1204563378690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 1204563378690 in words is "one trillion, two hundred four billion, five hundred sixty-three million, three hundred seventy-eight thousand, six hundred ninety".