1216530184023 has 192 divisors, whose sum is σ = 2270802014208. Its totient is φ = 614370240000.

The previous prime is 1216530184019. The next prime is 1216530184049. The reversal of 1216530184023 is 3204810356121.

1216530184023 is a `hidden beast` number, since 1 + 21 + 6 + 530 + 1 + 84 + 0 + 23 = 666.

It is not a de Polignac number, because 1216530184023 - 2² = 1216530184019 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216530184063) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1481765953 + ... + 1481766773.

It is an arithmetic number, because the mean of its divisors is an integer number (11827093824).

Almost surely, 2^{1216530184023} is an apocalyptic number.

1216530184023 is a deficient number, since it is larger than the sum of its proper divisors (1054271830185).

1216530184023 is a wasteful number, since it uses less digits than its factorization.

1216530184023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339 (or 1314 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 1216530184023 in words is "one trillion, two hundred sixteen billion, five hundred thirty million, one hundred eighty-four thousand, twenty-three".