11801011278 has 32 divisors (see below), whose sum is σ = 28560432384. Its totient is φ = 3173380992.

The previous prime is 11801011247. The next prime is 11801011349. The reversal of 11801011278 is 87211010811.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8263300 + ... + 8264727.

It is an arithmetic number, because the mean of its divisors is an integer number (892513512).

Almost surely, 2^11801011278 is an apocalyptic number.

11801011278 is an abundant number, since it is smaller than the sum of its proper divisors (16759421106).

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

11801011278 is a wasteful number, since it uses less digits than its factorization.

11801011278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16528056.

The product of its (nonzero) digits is 896, while the sum is 30.

The spelling of 11801011278 in words is "eleven billion, eight hundred one million, eleven thousand, two hundred seventy-eight".