1151021540424 has 128 divisors (see below), whose sum is σ = 3302499594240. Its totient is φ = 327478712832.

The previous prime is 1151021540419. The next prime is 1151021540437. The reversal of 1151021540424 is 4240451201511.

It is a junction number, because it is equal to n+sod(n) for n = 1151021540391 and 1151021540400.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56878212 + ... + 56898444.

It is an arithmetic number, because the mean of its divisors is an integer number (25800778080).

Almost surely, 2^{1151021540424} is an apocalyptic number.

1151021540424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151021540424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651249797120).

1151021540424 is an abundant number, since it is smaller than the sum of its proper divisors (2151478053816).

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

1151021540424 is a wasteful number, since it uses less digits than its factorization.

1151021540424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21659 (or 21655 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 1151021540424 its reverse (4240451201511), we get a palindrome (5391472741935).

The spelling of 1151021540424 in words is "one trillion, one hundred fifty-one billion, twenty-one million, five hundred forty thousand, four hundred twenty-four".