11214778454840 has 32 divisors (see below), whose sum is σ = 25660933758000. Its totient is φ = 4409878984704.

The previous prime is 11214778454839. The next prime is 11214778454849. The reversal of 11214778454840 is 4845487741211.

It is a super-2 number, since 2×11214778454840² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11214778454849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2376010025 + ... + 2376014744.

Almost surely, 2^{11214778454840} is an apocalyptic number.

11214778454840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11214778454840 is an abundant number, since it is smaller than the sum of its proper divisors (14446155303160).

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

11214778454840 is a wasteful number, since it uses less digits than its factorization.

11214778454840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4752024839 (or 4752024835 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 56.

The spelling of 11214778454840 in words is "eleven trillion, two hundred fourteen billion, seven hundred seventy-eight million, four hundred fifty-four thousand, eight hundred forty".