1206020551423 has 4 divisors (see below), whose sum is σ = 1206140432328. Its totient is φ = 1205900670520.

The previous prime is 1206020551403. The next prime is 1206020551433. The reversal of 1206020551423 is 3241550206021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1206020551423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206020551403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59925361 + ... + 59945482.

It is an arithmetic number, because the mean of its divisors is an integer number (301535108082).

Almost surely, 2^{1206020551423} is an apocalyptic number.

1206020551423 is a deficient number, since it is larger than the sum of its proper divisors (119880905).

1206020551423 is a wasteful number, since it uses less digits than its factorization.

1206020551423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119880904.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1206020551423 its reverse (3241550206021), we get a palindrome (4447570757444).

The spelling of 1206020551423 in words is "one trillion, two hundred six billion, twenty million, five hundred fifty-one thousand, four hundred twenty-three".