1953871495959 has 16 divisors (see below), whose sum is σ = 2711528899200. Its totient is φ = 1249948669536.

The previous prime is 1953871495867. The next prime is 1953871495993. The reversal of 1953871495959 is 9595941783591.

It is not a de Polignac number, because 1953871495959 - 2⁸ = 1953871495703 is a prime.

It is a super-2 number, since 2×1953871495959² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953871495999) 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, 68876289 + ... + 68904650.

It is an arithmetic number, because the mean of its divisors is an integer number (169470556200).

Almost surely, 2^{1953871495959} is an apocalyptic number.

1953871495959 is a deficient number, since it is larger than the sum of its proper divisors (757657403241).

1953871495959 is a wasteful number, since it uses less digits than its factorization.

1953871495959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137781134.

The product of its digits is 551124000, while the sum is 75.

The spelling of 1953871495959 in words is "one trillion, nine hundred fifty-three billion, eight hundred seventy-one million, four hundred ninety-five thousand, nine hundred fifty-nine".