11533814778 has 16 divisors (see below), whose sum is σ = 23074829856. Its totient is φ = 3843404880.

The previous prime is 11533814759. The next prime is 11533814801. The reversal of 11533814778 is 87741833511.

It is a super-2 number, since 2×11533814778² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279076 + ... + 317727.

It is an arithmetic number, because the mean of its divisors is an integer number (1442176866).

Almost surely, 2^11533814778 is an apocalyptic number.

11533814778 is an abundant number, since it is smaller than the sum of its proper divisors (11541015078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11533814778 is a wasteful number, since it uses less digits than its factorization.

11533814778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600029.

The product of its digits is 564480, while the sum is 48.

The spelling of 11533814778 in words is "eleven billion, five hundred thirty-three million, eight hundred fourteen thousand, seven hundred seventy-eight".