11655061212 has 24 divisors (see below), whose sum is σ = 28794857616. Its totient is φ = 3656489728.

The previous prime is 11655061211. The next prime is 11655061213. The reversal of 11655061212 is 21216055611.

It is an interprime number because it is at equal distance from previous prime (11655061211) and next prime (11655061213).

It is a self number, because there is not a number n which added to its sum of digits gives 11655061212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655061211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28566123 + ... + 28566530.

It is an arithmetic number, because the mean of its divisors is an integer number (1199785734).

Almost surely, 2^11655061212 is an apocalyptic number.

11655061212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11655061212 is an abundant number, since it is smaller than the sum of its proper divisors (17139796404).

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

11655061212 is a wasteful number, since it uses less digits than its factorization.

11655061212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57132677 (or 57132675 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 11655061212 in words is "eleven billion, six hundred fifty-five million, sixty-one thousand, two hundred twelve".