11785587278 has 4 divisors (see below), whose sum is σ = 17678380920. Its totient is φ = 5892793638.

The previous prime is 11785587257. The next prime is 11785587301. The reversal of 11785587278 is 87278558711.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2946396818 + ... + 2946396821.

It is an arithmetic number, because the mean of its divisors is an integer number (4419595230).

Almost surely, 2^11785587278 is an apocalyptic number.

11785587278 is a deficient number, since it is larger than the sum of its proper divisors (5892793642).

11785587278 is an equidigital number, since it uses as much as digits as its factorization.

11785587278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5892793641.

The product of its digits is 8780800, while the sum is 59.

The spelling of 11785587278 in words is "eleven billion, seven hundred eighty-five million, five hundred eighty-seven thousand, two hundred seventy-eight".