111631146450474 has 128 divisors (see below), whose sum is σ = 261027940442112. Its totient is φ = 31163057902080.

The previous prime is 111631146450457. The next prime is 111631146450493. The reversal of 111631146450474 is 474054641136111.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11387442457 + ... + 11387452259.

It is an arithmetic number, because the mean of its divisors is an integer number (2039280784704).

Almost surely, 2^{111631146450474} is an apocalyptic number.

111631146450474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111631146450474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130513970221056).

111631146450474 is an abundant number, since it is smaller than the sum of its proper divisors (149396793991638).

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

111631146450474 is a wasteful number, since it uses less digits than its factorization.

111631146450474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19060.

The product of its (nonzero) digits is 967680, while the sum is 48.

Adding to 111631146450474 its reverse (474054641136111), we get a palindrome (585685787586585).

The spelling of 111631146450474 in words is "one hundred eleven trillion, six hundred thirty-one billion, one hundred forty-six million, four hundred fifty thousand, four hundred seventy-four".