1213819292765 has 16 divisors (see below), whose sum is σ = 1533508173120. Its totient is φ = 919789603200.

The previous prime is 1213819292761. The next prime is 1213819292783. The reversal of 1213819292765 is 5672929183121.

It is not a de Polignac number, because 1213819292765 - 2² = 1213819292761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213819292765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213819292761) 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 15 ways as a sum of consecutive naturals, for example, 536024 + ... + 1647713.

It is an arithmetic number, because the mean of its divisors is an integer number (95844260820).

Almost surely, 2^{1213819292765} is an apocalyptic number.

It is an amenable number.

1213819292765 is a deficient number, since it is larger than the sum of its proper divisors (319688880355).

1213819292765 is a wasteful number, since it uses less digits than its factorization.

1213819292765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189612.

The product of its digits is 3265920, while the sum is 56.

The spelling of 1213819292765 in words is "one trillion, two hundred thirteen billion, eight hundred nineteen million, two hundred ninety-two thousand, seven hundred sixty-five".