1209860838771 has 8 divisors (see below), whose sum is σ = 1737236076240. Its totient is φ = 744529746912.

The previous prime is 1209860838653. The next prime is 1209860838773. The reversal of 1209860838771 is 1778380689021.

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

It is not a de Polignac number, because 1209860838771 - 2¹⁰ = 1209860837747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1209860838773) 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, 15511036356 + ... + 15511036433.

It is an arithmetic number, because the mean of its divisors is an integer number (217154509530).

Almost surely, 2^{1209860838771} is an apocalyptic number.

1209860838771 is a deficient number, since it is larger than the sum of its proper divisors (527375237469).

1209860838771 is a wasteful number, since it uses less digits than its factorization.

1209860838771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31022072805.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The spelling of 1209860838771 in words is "one trillion, two hundred nine billion, eight hundred sixty million, eight hundred thirty-eight thousand, seven hundred seventy-one".