1520214321312 has 72 divisors (see below), whose sum is σ = 4351739464800. Its totient is φ = 503382211200.

The previous prime is 1520214321299. The next prime is 1520214321347. The reversal of 1520214321312 is 2131234120251.

It is a happy number.

1520214321312 is a `hidden beast` number, since 1 + 5 + 2 + 0 + 21 + 4 + 321 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1520214321312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17435062 + ... + 17522037.

It is an arithmetic number, because the mean of its divisors is an integer number (60440825900).

Almost surely, 2^{1520214321312} is an apocalyptic number.

1520214321312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1520214321312 is an abundant number, since it is smaller than the sum of its proper divisors (2831525143488).

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

1520214321312 is a wasteful number, since it uses less digits than its factorization.

1520214321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34957266 (or 34957255 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1520214321312 its reverse (2131234120251), we get a palindrome (3651448441563).

The spelling of 1520214321312 in words is "one trillion, five hundred twenty billion, two hundred fourteen million, three hundred twenty-one thousand, three hundred twelve".