1206530515788 has 24 divisors (see below), whose sum is σ = 3031794629808. Its totient is φ = 371240158656.

The previous prime is 1206530515787. The next prime is 1206530515807. The reversal of 1206530515788 is 8875150356021.

It is a self number, because there is not a number n which added to its sum of digits gives 1206530515788.

It is not an unprimeable number, because it can be changed into a prime (1206530515787) 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, 3867084831 + ... + 3867085142.

It is an arithmetic number, because the mean of its divisors is an integer number (126324776242).

Almost surely, 2^{1206530515788} is an apocalyptic number.

It is an amenable number.

1206530515788 is an abundant number, since it is smaller than the sum of its proper divisors (1825264114020).

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

1206530515788 is a wasteful number, since it uses less digits than its factorization.

1206530515788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7734169993 (or 7734169991 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 51.

The spelling of 1206530515788 in words is "one trillion, two hundred six billion, five hundred thirty million, five hundred fifteen thousand, seven hundred eighty-eight".