11509391054 has 16 divisors (see below), whose sum is σ = 19736690688. Its totient is φ = 4931019672.

The previous prime is 11509391053. The next prime is 11509391071. The reversal of 11509391054 is 45019390511.

It is a junction number, because it is equal to n+sod(n) for n = 11509390999 and 11509391017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11509391053) 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, 85454 + ... + 174129.

It is an arithmetic number, because the mean of its divisors is an integer number (1233543168).

Almost surely, 2^11509391054 is an apocalyptic number.

11509391054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11509391054 is a deficient number, since it is larger than the sum of its proper divisors (8227299634).

11509391054 is a wasteful number, since it uses less digits than its factorization.

11509391054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262759.

The product of its (nonzero) digits is 24300, while the sum is 38.

The spelling of 11509391054 in words is "eleven billion, five hundred nine million, three hundred ninety-one thousand, fifty-four".