11719953645 has 32 divisors (see below), whose sum is σ = 19082473344. Its totient is φ = 6141408000.

The previous prime is 11719953613. The next prime is 11719953647. The reversal of 11719953645 is 54635991711.

11719953645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11719953645 - 2⁵ = 11719953613 is a prime.

It is a super-3 number, since 3×11719953645³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11719953647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168939 + ... + 227991.

It is an arithmetic number, because the mean of its divisors is an integer number (596327292).

Almost surely, 2^11719953645 is an apocalyptic number.

11719953645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11719953645 is a deficient number, since it is larger than the sum of its proper divisors (7362519699).

11719953645 is a wasteful number, since it uses less digits than its factorization.

11719953645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59293.

The product of its digits is 1020600, while the sum is 51.

The spelling of 11719953645 in words is "eleven billion, seven hundred nineteen million, nine hundred fifty-three thousand, six hundred forty-five".