1243578792960 has 396 divisors, whose sum is σ = 5012482234968. Its totient is φ = 284246065152.

The previous prime is 1243578792943. The next prime is 1243578792971. The reversal of 1243578792960 is 692978753421.

1243578792960 is a `hidden beast` number, since 1 + 2 + 435 + 78 + 79 + 2 + 9 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1982539 + ... + 2533301.

It is a 1-persistent number, because it is pandigital, but 2⋅1243578792960 = 2487157585920 is not.

Almost surely, 2^{1243578792960} is an apocalyptic number.

1243578792960 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 1243578792960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2506241117484).

1243578792960 is an abundant number, since it is smaller than the sum of its proper divisors (3768903442008).

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

1243578792960 is a wasteful number, since it uses less digits than its factorization.

1243578792960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550808 (or 550780 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 1243578792960 in words is "one trillion, two hundred forty-three billion, five hundred seventy-eight million, seven hundred ninety-two thousand, nine hundred sixty".