1995789497775 has 36 divisors (see below), whose sum is σ = 3449408447688. Its totient is φ = 1018141868480.

The previous prime is 1995789497771. The next prime is 1995789497797. The reversal of 1995789497775 is 5777949875991.

It is not a de Polignac number, because 1995789497775 - 2² = 1995789497771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1995789497691 and 1995789497700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995789497771) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25112052 + ... + 25191401.

Almost surely, 2^{1995789497775} is an apocalyptic number.

1995789497775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1995789497775 is a deficient number, since it is larger than the sum of its proper divisors (1453618949913).

1995789497775 is a wasteful number, since it uses less digits than its factorization.

1995789497775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50303512 (or 50303484 counting only the distinct ones).

The product of its digits is 12602368800, while the sum is 87.

The spelling of 1995789497775 in words is "one trillion, nine hundred ninety-five billion, seven hundred eighty-nine million, four hundred ninety-seven thousand, seven hundred seventy-five".