1540550216740 has 24 divisors (see below), whose sum is σ = 3247743619512. Its totient is φ = 613822341120.

The previous prime is 1540550216729. The next prime is 1540550216749. The reversal of 1540550216740 is 476120550451.

It can be written as a sum of positive squares in 4 ways, for example, as 129030387264 + 1411519829476 = 359208^2 + 1188074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1540550216693 and 1540550216702.

It is not an unprimeable number, because it can be changed into a prime (1540550216749) 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, 149853831 + ... + 149864110.

It is an arithmetic number, because the mean of its divisors is an integer number (135322650813).

Almost surely, 2^{1540550216740} is an apocalyptic number.

1540550216740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540550216740 is an abundant number, since it is smaller than the sum of its proper divisors (1707193402772).

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

1540550216740 is a wasteful number, since it uses less digits than its factorization.

1540550216740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299718207 (or 299718205 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

The spelling of 1540550216740 in words is "one trillion, five hundred forty billion, five hundred fifty million, two hundred sixteen thousand, seven hundred forty".