1955424245591 has 16 divisors (see below), whose sum is σ = 2090820305088. Its totient is φ = 1822369536000.

The previous prime is 1955424245527. The next prime is 1955424245597.

It is a happy number.

1955424245591 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1955424245591 - 2⁶ = 1955424245527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1955424245597) 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, 413390 + ... + 2020331.

It is an arithmetic number, because the mean of its divisors is an integer number (130676269068).

Almost surely, 2^{1955424245591} is an apocalyptic number.

1955424245591 is a deficient number, since it is larger than the sum of its proper divisors (135396059497).

1955424245591 is a wasteful number, since it uses less digits than its factorization.

1955424245591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434202.

The product of its digits is 12960000, while the sum is 56.

The spelling of 1955424245591 in words is "one trillion, nine hundred fifty-five billion, four hundred twenty-four million, two hundred forty-five thousand, five hundred ninety-one".