1216739896320 has 352 divisors, whose sum is σ = 4253624863488. Its totient is φ = 295031734272.

The previous prime is 1216739896303. The next prime is 1216739896357. The reversal of 1216739896320 is 236989376121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13333087 + ... + 13424033.

It is an arithmetic number, because the mean of its divisors is an integer number (12084161544).

Almost surely, 2^{1216739896320} is an apocalyptic number.

1216739896320 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 1216739896320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2126812431744).

1216739896320 is an abundant number, since it is smaller than the sum of its proper divisors (3036884967168).

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

1216739896320 is a wasteful number, since it uses less digits than its factorization.

1216739896320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91055 (or 91037 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 57.

The spelling of 1216739896320 in words is "one trillion, two hundred sixteen billion, seven hundred thirty-nine million, eight hundred ninety-six thousand, three hundred twenty".