1520312251020 has 48 divisors (see below), whose sum is σ = 4403663076960. Its totient is φ = 391436717056.

The previous prime is 1520312251013. The next prime is 1520312251033. The reversal of 1520312251020 is 201522130251.

It is a super-2 number, since 2×1520312251020² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436869597 + ... + 436873076.

It is an arithmetic number, because the mean of its divisors is an integer number (91742980770).

Almost surely, 2^{1520312251020} is an apocalyptic number.

1520312251020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520312251020 is an abundant number, since it is smaller than the sum of its proper divisors (2883350825940).

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

1520312251020 is a wasteful number, since it uses less digits than its factorization.

1520312251020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873742714 (or 873742712 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 1520312251020 its reverse (201522130251), we get a palindrome (1721834381271).

The spelling of 1520312251020 in words is "one trillion, five hundred twenty billion, three hundred twelve million, two hundred fifty-one thousand, twenty".