1216280775152 has 20 divisors (see below), whose sum is σ = 2358330656880. Its totient is φ = 607679315328.

The previous prime is 1216280775131. The next prime is 1216280775191. The reversal of 1216280775152 is 2515770826121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1216280775097 and 1216280775106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28795253 + ... + 28837460.

It is an arithmetic number, because the mean of its divisors is an integer number (117916532844).

Almost surely, 2^{1216280775152} is an apocalyptic number.

It is an amenable number.

1216280775152 is a deficient number, since it is larger than the sum of its proper divisors (1142049881728).

1216280775152 is a wasteful number, since it uses less digits than its factorization.

1216280775152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57634040 (or 57634034 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 1216280775152 in words is "one trillion, two hundred sixteen billion, two hundred eighty million, seven hundred seventy-five thousand, one hundred fifty-two".