111491581460 has 48 divisors (see below), whose sum is σ = 268091596416. Its totient is φ = 38152570752.

The previous prime is 111491581433. The next prime is 111491581493. The reversal of 111491581460 is 64185194111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688127 + ... + 834566.

It is an arithmetic number, because the mean of its divisors is an integer number (5585241592).

Almost surely, 2^111491581460 is an apocalyptic number.

111491581460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111491581460 is an abundant number, since it is smaller than the sum of its proper divisors (156600014956).

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

111491581460 is a wasteful number, since it uses less digits than its factorization.

111491581460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523232 (or 1523230 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 41.

The spelling of 111491581460 in words is "one hundred eleven billion, four hundred ninety-one million, five hundred eighty-one thousand, four hundred sixty".