1209061881903 has 16 divisors (see below), whose sum is σ = 1625157718016. Its totient is φ = 799529749920.

The previous prime is 1209061881893. The next prime is 1209061881931. The reversal of 1209061881903 is 3091881609021.

It is not a de Polignac number, because 1209061881903 - 2²⁹ = 1208525010991 is a prime.

It is the 1099574-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209061885903) by changing a digit.

It is a nontrivial repunit in base 1099573.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3076903 + ... + 3447528.

It is an arithmetic number, because the mean of its divisors is an integer number (101572357376).

Almost surely, 2^{1209061881903} is an apocalyptic number.

1209061881903 is a deficient number, since it is larger than the sum of its proper divisors (416095836113).

1209061881903 is a wasteful number, since it uses less digits than its factorization.

1209061881903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6524934.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 1209061881903 in words is "one trillion, two hundred nine billion, sixty-one million, eight hundred eighty-one thousand, nine hundred three".