11278770485 has 8 divisors (see below), whose sum is σ = 13538089656. Its totient is φ = 9020639680.

The previous prime is 11278770439. The next prime is 11278770487. The reversal of 11278770485 is 58407787211.

It can be written as a sum of positive squares in 4 ways, for example, as 5874609316 + 5404161169 = 76646^2 + 73513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-11278770485 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11278770487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276074 + ... + 314283.

It is an arithmetic number, because the mean of its divisors is an integer number (1692261207).

Almost surely, 2^11278770485 is an apocalyptic number.

It is an amenable number.

11278770485 is a deficient number, since it is larger than the sum of its proper divisors (2259319171).

11278770485 is an equidigital number, since it uses as much as digits as its factorization.

11278770485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594183.

The product of its (nonzero) digits is 878080, while the sum is 50.

The spelling of 11278770485 in words is "eleven billion, two hundred seventy-eight million, seven hundred seventy thousand, four hundred eighty-five".