1216575652512 has 96 divisors (see below), whose sum is σ = 3484975463424. Its totient is φ = 368538105600.

The previous prime is 1216575652469. The next prime is 1216575652529. The reversal of 1216575652512 is 2152565756121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3050937 + ... + 3426567.

It is an arithmetic number, because the mean of its divisors is an integer number (36301827744).

Almost surely, 2^{1216575652512} is an apocalyptic number.

1216575652512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1216575652512 is an abundant number, since it is smaller than the sum of its proper divisors (2268399810912).

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

1216575652512 is a wasteful number, since it uses less digits than its factorization.

1216575652512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378722 (or 378714 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 48.

The spelling of 1216575652512 in words is "one trillion, two hundred sixteen billion, five hundred seventy-five million, six hundred fifty-two thousand, five hundred twelve".