11279964645 has 12 divisors (see below), whose sum is σ = 19551938796. Its totient is φ = 6015981120.

The previous prime is 11279964629. The next prime is 11279964653. The reversal of 11279964645 is 54646997211.

It can be written as a sum of positive squares in 2 ways, for example, as 2120326209 + 9159638436 = 46047^2 + 95706^2 .

It is not a de Polignac number, because 11279964645 - 2⁴ = 11279964629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11279964591 and 11279964600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 125332896 + ... + 125332985.

It is an arithmetic number, because the mean of its divisors is an integer number (1629328233).

Almost surely, 2^11279964645 is an apocalyptic number.

11279964645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11279964645 is a deficient number, since it is larger than the sum of its proper divisors (8271974151).

11279964645 is a wasteful number, since it uses less digits than its factorization.

11279964645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250665892 (or 250665889 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 11279964645 in words is "eleven billion, two hundred seventy-nine million, nine hundred sixty-four thousand, six hundred forty-five".