1145555315540 has 24 divisors (see below), whose sum is σ = 2406150117000. Its totient is φ = 458129944448.

The previous prime is 1145555315533. The next prime is 1145555315543. The reversal of 1145555315540 is 455135555411.

It can be written as a sum of positive squares in 4 ways, for example, as 211537444624 + 934017870916 = 459932^2 + 966446^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1145555315491 and 1145555315500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145555315543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5659415 + ... + 5858334.

It is an arithmetic number, because the mean of its divisors is an integer number (100256254875).

Almost surely, 2^{1145555315540} is an apocalyptic number.

1145555315540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145555315540 is an abundant number, since it is smaller than the sum of its proper divisors (1260594801460).

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

1145555315540 is a wasteful number, since it uses less digits than its factorization.

1145555315540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11522731 (or 11522729 counting only the distinct ones).

The product of its (nonzero) digits is 750000, while the sum is 44.

The spelling of 1145555315540 in words is "one trillion, one hundred forty-five billion, five hundred fifty-five million, three hundred fifteen thousand, five hundred forty".