1999999999995 has 32 divisors (see below), whose sum is σ = 3233110256640. Its totient is φ = 1055649692160.

The previous prime is 1999999999981. The next prime is 2000000000003. The reversal of 1999999999995 is 5999999999991.

It is not a de Polignac number, because 1999999999995 - 2⁷ = 1999999999867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1999999999893 and 1999999999902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1001950 + ... + 2236940.

It is an arithmetic number, because the mean of its divisors is an integer number (101034695520).

Almost surely, 2^{1999999999995} is an apocalyptic number.

1999999999995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1999999999995 is a deficient number, since it is larger than the sum of its proper divisors (1233110256645).

1999999999995 is a wasteful number, since it uses less digits than its factorization.

1999999999995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236115.

The product of its digits is 156905298045, while the sum is 105.

The spelling of 1999999999995 in words is "one trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-five".