1178351944520 has 64 divisors (see below), whose sum is σ = 2768701288320. Its totient is φ = 450499636224.

The previous prime is 1178351944513. The next prime is 1178351944529. The reversal of 1178351944520 is 254491538711.

It is not an unprimeable number, because it can be changed into a prime (1178351944529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699479 + ... + 1687001.

It is an arithmetic number, because the mean of its divisors is an integer number (43260957630).

Almost surely, 2^{1178351944520} is an apocalyptic number.

1178351944520 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 1178351944520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384350644160).

1178351944520 is an abundant number, since it is smaller than the sum of its proper divisors (1590349343800).

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

1178351944520 is a wasteful number, since it uses less digits than its factorization.

1178351944520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988854 (or 988850 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 1178351944520 in words is "one trillion, one hundred seventy-eight billion, three hundred fifty-one million, nine hundred forty-four thousand, five hundred twenty".