1206111653564 has 48 divisors (see below), whose sum is σ = 2172649533600. Its totient is φ = 585499622400.

The previous prime is 1206111653519. The next prime is 1206111653569. The reversal of 1206111653564 is 4653561116021.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206111653569) 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, 94672307 + ... + 94685045.

It is an arithmetic number, because the mean of its divisors is an integer number (45263531950).

Almost surely, 2^{1206111653564} is an apocalyptic number.

It is an amenable number.

1206111653564 is a deficient number, since it is larger than the sum of its proper divisors (966537880036).

1206111653564 is a wasteful number, since it uses less digits than its factorization.

1206111653564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15534 (or 15532 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

Adding to 1206111653564 its reverse (4653561116021), we get a palindrome (5859672769585).

The spelling of 1206111653564 in words is "one trillion, two hundred six billion, one hundred eleven million, six hundred fifty-three thousand, five hundred sixty-four".