11277389478 has 8 divisors (see below), whose sum is σ = 22554778968. Its totient is φ = 3759129824.

The previous prime is 11277389411. The next prime is 11277389483. The reversal of 11277389478 is 87498377211.

It is a sphenic number, since it is the product of 3 distinct primes.

11277389478 is an admirable number.

It is a super-2 number, since 2×11277389478² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 939782451 + ... + 939782462.

It is an arithmetic number, because the mean of its divisors is an integer number (2819347371).

Almost surely, 2^11277389478 is an apocalyptic number.

11277389478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11277389478 is a wasteful number, since it uses less digits than its factorization.

11277389478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879564918.

The product of its digits is 4741632, while the sum is 57.

The spelling of 11277389478 in words is "eleven billion, two hundred seventy-seven million, three hundred eighty-nine thousand, four hundred seventy-eight".