11995910019 has 24 divisors (see below), whose sum is σ = 17467029840. Its totient is φ = 7932930048.

The previous prime is 11995909997. The next prime is 11995910021. The reversal of 11995910019 is 91001959911.

It is not a de Polignac number, because 11995910019 - 2²¹ = 11993812867 is a prime.

It is a super-2 number, since 2×11995910019² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11995910419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2151267 + ... + 2156835.

It is an arithmetic number, because the mean of its divisors is an integer number (727792910).

Almost surely, 2^11995910019 is an apocalyptic number.

11995910019 is a deficient number, since it is larger than the sum of its proper divisors (5471119821).

11995910019 is a wasteful number, since it uses less digits than its factorization.

11995910019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459 (or 7456 counting only the distinct ones).

The product of its (nonzero) digits is 32805, while the sum is 45.

The spelling of 11995910019 in words is "eleven billion, nine hundred ninety-five million, nine hundred ten thousand, nineteen".