1955256759449 has 16 divisors (see below), whose sum is σ = 2366263807488. Its totient is φ = 1577190776832.

The previous prime is 1955256759431. The next prime is 1955256759479. The reversal of 1955256759449 is 9449576525591.

It is a cyclic number.

It is not a de Polignac number, because 1955256759449 - 2²⁴ = 1955239982233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1955256759479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361817 + ... + 2010329.

It is an arithmetic number, because the mean of its divisors is an integer number (147891487968).

Almost surely, 2^{1955256759449} is an apocalyptic number.

It is an amenable number.

1955256759449 is a deficient number, since it is larger than the sum of its proper divisors (411007048039).

1955256759449 is a wasteful number, since it uses less digits than its factorization.

1955256759449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658504.

The product of its digits is 612360000, while the sum is 71.

The spelling of 1955256759449 in words is "one trillion, nine hundred fifty-five billion, two hundred fifty-six million, seven hundred fifty-nine thousand, four hundred forty-nine".