1520520402020 has 24 divisors (see below), whose sum is σ = 3361150363200. Its totient is φ = 576197204832.

The previous prime is 1520520401989. The next prime is 1520520402043. The reversal of 1520520402020 is 202040250251.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2000684360 + ... + 2000685119.

It is an arithmetic number, because the mean of its divisors is an integer number (140047931800).

Almost surely, 2^{1520520402020} is an apocalyptic number.

1520520402020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520520402020 is an abundant number, since it is smaller than the sum of its proper divisors (1840629961180).

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

1520520402020 is a wasteful number, since it uses less digits than its factorization.

1520520402020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4001369507 (or 4001369505 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 1520520402020 its reverse (202040250251), we get a palindrome (1722560652271).

The spelling of 1520520402020 in words is "one trillion, five hundred twenty billion, five hundred twenty million, four hundred two thousand, twenty".