1216348341680 has 40 divisors (see below), whose sum is σ = 2919236025984. Its totient is φ = 470844518400.

The previous prime is 1216348341617. The next prime is 1216348341727. The reversal of 1216348341680 is 861438436121.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245229041 + ... + 245234000.

Almost surely, 2^{1216348341680} is an apocalyptic number.

1216348341680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216348341680 is an abundant number, since it is smaller than the sum of its proper divisors (1702887684304).

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

1216348341680 is a wasteful number, since it uses less digits than its factorization.

1216348341680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490463085 (or 490463079 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 1216348341680 in words is "one trillion, two hundred sixteen billion, three hundred forty-eight million, three hundred forty-one thousand, six hundred eighty".