11778542212 has 12 divisors (see below), whose sum is σ = 21323223180. Its totient is φ = 5686192736.

The previous prime is 11778542203. The next prime is 11778542221. The reversal of 11778542212 is 21224587711.

It is an interprime number because it is at equal distance from previous prime (11778542203) and next prime (11778542221).

It can be written as a sum of positive squares in 2 ways, for example, as 5162997316 + 6615544896 = 71854^2 + 81336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50769463 + ... + 50769694.

It is an arithmetic number, because the mean of its divisors is an integer number (1776935265).

Almost surely, 2^11778542212 is an apocalyptic number.

It is an amenable number.

11778542212 is a deficient number, since it is larger than the sum of its proper divisors (9544680968).

11778542212 is a wasteful number, since it uses less digits than its factorization.

11778542212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101539190 (or 101539188 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The spelling of 11778542212 in words is "eleven billion, seven hundred seventy-eight million, five hundred forty-two thousand, two hundred twelve".