1111497143946 has 64 divisors (see below), whose sum is σ = 2691674219520. Its totient is φ = 298705063680.

The previous prime is 1111497143923. The next prime is 1111497143983. The reversal of 1111497143946 is 6493417941111.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 675201 + ... + 1636731.

It is an arithmetic number, because the mean of its divisors is an integer number (42057409680).

Almost surely, 2^{1111497143946} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111497143946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345837109760).

1111497143946 is an abundant number, since it is smaller than the sum of its proper divisors (1580177075574).

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

1111497143946 is a wasteful number, since it uses less digits than its factorization.

1111497143946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963179.

The product of its digits is 653184, while the sum is 51.

The spelling of 1111497143946 in words is "one trillion, one hundred eleven billion, four hundred ninety-seven million, one hundred forty-three thousand, nine hundred forty-six".