111261604454 has 256 divisors, whose sum is σ = 245179146240. Its totient is φ = 36425410560.

The previous prime is 111261604361. The next prime is 111261604481. The reversal of 111261604454 is 454406162111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 134535989 + ... + 134536815.

It is an arithmetic number, because the mean of its divisors is an integer number (957731040).

Almost surely, 2^111261604454 is an apocalyptic number.

111261604454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

111261604454 is an abundant number, since it is smaller than the sum of its proper divisors (133917541786).

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

111261604454 is a wasteful number, since it uses less digits than its factorization.

111261604454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003.

The product of its (nonzero) digits is 23040, while the sum is 35.

Adding to 111261604454 its reverse (454406162111), we get a palindrome (565667766565).

The spelling of 111261604454 in words is "one hundred eleven billion, two hundred sixty-one million, six hundred four thousand, four hundred fifty-four".