1955916340049 has 6 divisors (see below), whose sum is σ = 2275249620114. Its totient is φ = 1676499720000.

The previous prime is 1955916339943. The next prime is 1955916340093. The reversal of 1955916340049 is 9400436195591.

It can be written as a sum of positive squares in only one way, i.e., 1735561203649 + 220355136400 = 1317407^2 + 469420^2 .

It is not a de Polignac number, because 1955916340049 - 2³⁶ = 1887196863313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1955916339976 and 1955916340003.

It is not an unprimeable number, because it can be changed into a prime (1954916340049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19958329952 + ... + 19958330049.

It is an arithmetic number, because the mean of its divisors is an integer number (379208270019).

Almost surely, 2^{1955916340049} is an apocalyptic number.

It is an amenable number.

1955916340049 is a deficient number, since it is larger than the sum of its proper divisors (319333280065).

1955916340049 is an equidigital number, since it uses as much as digits as its factorization.

1955916340049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39916660015 (or 39916660008 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 56.

The spelling of 1955916340049 in words is "one trillion, nine hundred fifty-five billion, nine hundred sixteen million, three hundred forty thousand, forty-nine".