1178743849920 has 1008 divisors, whose sum is σ = 5039578440000. Its totient is φ = 247605755904.

The previous prime is 1178743849903. The next prime is 1178743849973. The reversal of 1178743849920 is 299483478711.

1178743849920 is a `hidden beast` number, since 1 + 1 + 7 + 87 + 43 + 8 + 499 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

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 143 ways as a sum of consecutive naturals, for example, 943749456 + ... + 943750704.

Almost surely, 2^{1178743849920} is an apocalyptic number.

1178743849920 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 1178743849920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2519789220000).

1178743849920 is an abundant number, since it is smaller than the sum of its proper divisors (3860834590080).

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

1178743849920 is a wasteful number, since it uses less digits than its factorization.

1178743849920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 1178743849920 in words is "one trillion, one hundred seventy-eight billion, seven hundred forty-three million, eight hundred forty-nine thousand, nine hundred twenty".