11246777789 has 6 divisors (see below), whose sum is σ = 12178463706. Its totient is φ = 10381640880.

The previous prime is 11246777761. The next prime is 11246777813. The reversal of 11246777789 is 98777764211.

It can be written as a sum of positive squares in 3 ways, for example, as 871725625 + 10375052164 = 29525^2 + 101858^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11246777789 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11246777189) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33274322 + ... + 33274659.

It is an arithmetic number, because the mean of its divisors is an integer number (2029743951).

Almost surely, 2^11246777789 is an apocalyptic number.

It is an amenable number.

11246777789 is a deficient number, since it is larger than the sum of its proper divisors (931685917).

11246777789 is an equidigital number, since it uses as much as digits as its factorization.

11246777789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66549007 (or 66548994 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 59.

The spelling of 11246777789 in words is "eleven billion, two hundred forty-six million, seven hundred seventy-seven thousand, seven hundred eighty-nine".