1205750216551 has 8 divisors (see below), whose sum is σ = 1221035182400. Its totient is φ = 1190465808480.

The previous prime is 1205750216549. The next prime is 1205750216597. The reversal of 1205750216551 is 1556120575021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1205750216551 - 2¹ = 1205750216549 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 (1205750216501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5808865 + ... + 6012853.

It is an arithmetic number, because the mean of its divisors is an integer number (152629397800).

Almost surely, 2^{1205750216551} is an apocalyptic number.

1205750216551 is a deficient number, since it is larger than the sum of its proper divisors (15284965849).

1205750216551 is an equidigital number, since it uses as much as digits as its factorization.

1205750216551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278889.

The product of its (nonzero) digits is 105000, while the sum is 40.

The spelling of 1205750216551 in words is "one trillion, two hundred five billion, seven hundred fifty million, two hundred sixteen thousand, five hundred fifty-one".