1520040445020 has 120 divisors (see below), whose sum is σ = 4846594360608. Its totient is φ = 398699107200.

The previous prime is 1520040445009. The next prime is 1520040445043. The reversal of 1520040445020 is 205440400251.

1520040445020 is a `hidden beast` number, since 1 + 5 + 200 + 4 + 0 + 4 + 450 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 7592136 + ... + 7789775.

Almost surely, 2^{1520040445020} is an apocalyptic number.

1520040445020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520040445020 is an abundant number, since it is smaller than the sum of its proper divisors (3326553915588).

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

1520040445020 is a wasteful number, since it uses less digits than its factorization.

1520040445020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15381993 (or 15381982 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 1520040445020 its reverse (205440400251), we get a palindrome (1725480845271).

The spelling of 1520040445020 in words is "one trillion, five hundred twenty billion, forty million, four hundred forty-five thousand, twenty".