11111947254 has 84 divisors (see below), whose sum is σ = 25632506988. Its totient is φ = 3609249840.

The previous prime is 11111947237. The next prime is 11111947307. The reversal of 11111947254 is 45274911111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 26393964 + ... + 26394384.

Almost surely, 2^11111947254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111947254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12816253494).

11111947254 is an abundant number, since it is smaller than the sum of its proper divisors (14520559734).

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

11111947254 is an frugal number, since it uses more digits than its factorization.

11111947254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 469 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The spelling of 11111947254 in words is "eleven billion, one hundred eleven million, nine hundred forty-seven thousand, two hundred fifty-four".