1236949195955 has 16 divisors (see below), whose sum is σ = 1619992764000. Its totient is φ = 899202850560.

The previous prime is 1236949195939. The next prime is 1236949195969. The reversal of 1236949195955 is 5595919496321.

It is not a de Polignac number, because 1236949195955 - 2⁴ = 1236949195939 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4831130 + ... + 5080719.

It is an arithmetic number, because the mean of its divisors is an integer number (101249547750).

Almost surely, 2^{1236949195955} is an apocalyptic number.

1236949195955 is a deficient number, since it is larger than the sum of its proper divisors (383043568045).

1236949195955 is a wasteful number, since it uses less digits than its factorization.

1236949195955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9914134.

The product of its digits is 118098000, while the sum is 68.

The spelling of 1236949195955 in words is "one trillion, two hundred thirty-six billion, nine hundred forty-nine million, one hundred ninety-five thousand, nine hundred fifty-five".