1540203010220 has 24 divisors (see below), whose sum is σ = 3696487224864. Its totient is φ = 528069603456.

The previous prime is 1540203010219. The next prime is 1540203010237. The reversal of 1540203010220 is 220103020451.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1540203010192 and 1540203010201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5500724897 + ... + 5500725176.

It is an arithmetic number, because the mean of its divisors is an integer number (154020301036).

Almost surely, 2^{1540203010220} is an apocalyptic number.

1540203010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540203010220 is an abundant number, since it is smaller than the sum of its proper divisors (2156284214644).

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

1540203010220 is a wasteful number, since it uses less digits than its factorization.

1540203010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001450089 (or 11001450087 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 1540203010220 its reverse (220103020451), we get a palindrome (1760306030671).

The spelling of 1540203010220 in words is "one trillion, five hundred forty billion, two hundred three million, ten thousand, two hundred twenty".