1995131562945 has 16 divisors (see below), whose sum is σ = 3192561165120. Its totient is φ = 1063953278784.

The previous prime is 1995131562913. The next prime is 1995131562959. The reversal of 1995131562945 is 5492651315991.

It is a happy number.

It is not a de Polignac number, because 1995131562945 - 2⁵ = 1995131562913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7164319 + ... + 7437588.

It is an arithmetic number, because the mean of its divisors is an integer number (199535072820).

Almost surely, 2^{1995131562945} is an apocalyptic number.

1995131562945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1995131562945 is a deficient number, since it is larger than the sum of its proper divisors (1197429602175).

1995131562945 is a wasteful number, since it uses less digits than its factorization.

1995131562945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14611024.

The product of its digits is 13122000, while the sum is 60.

The spelling of 1995131562945 in words is "one trillion, nine hundred ninety-five billion, one hundred thirty-one million, five hundred sixty-two thousand, nine hundred forty-five".