1216446959460 has 48 divisors (see below), whose sum is σ = 3408305910912. Its totient is φ = 324171148800.

The previous prime is 1216446959411. The next prime is 1216446959461. The reversal of 1216446959460 is 649596446121.

It is a self number, because there is not a number n which added to its sum of digits gives 1216446959460.

It is not an unprimeable number, because it can be changed into a prime (1216446959461) 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, 6618181 + ... + 6799500.

It is an arithmetic number, because the mean of its divisors is an integer number (71006373144).

Almost surely, 2^{1216446959460} is an apocalyptic number.

1216446959460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216446959460 is an abundant number, since it is smaller than the sum of its proper divisors (2191858951452).

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

1216446959460 is a wasteful number, since it uses less digits than its factorization.

1216446959460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13419204 (or 13419202 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 1216446959460 in words is "one trillion, two hundred sixteen billion, four hundred forty-six million, nine hundred fifty-nine thousand, four hundred sixty".