11647483778 has 24 divisors (see below), whose sum is σ = 21073335552. Its totient is φ = 4729051512.

The previous prime is 11647483763. The next prime is 11647483807. The reversal of 11647483778 is 87738474611.

It is a super-3 number, since 3×11647483778³ (a number of 31 digits) contains 333 as substring.

It is a Curzon 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, 1147250 + ... + 1157357.

It is an arithmetic number, because the mean of its divisors is an integer number (878055648).

Almost surely, 2^11647483778 is an apocalyptic number.

11647483778 is a deficient number, since it is larger than the sum of its proper divisors (9425851774).

11647483778 is a wasteful number, since it uses less digits than its factorization.

11647483778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304654 (or 2304635 counting only the distinct ones).

The product of its digits is 6322176, while the sum is 56.

The spelling of 11647483778 in words is "eleven billion, six hundred forty-seven million, four hundred eighty-three thousand, seven hundred seventy-eight".