1521540245314 has 4 divisors (see below), whose sum is σ = 2282310367974. Its totient is φ = 760770122656.

The previous prime is 1521540245297. The next prime is 1521540245327. The reversal of 1521540245314 is 4135420451251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1211062833289 + 310477412025 = 1100483^2 + 557205^2 .

It is a super-2 number, since 2×1521540245314² (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 (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380385061327 + ... + 380385061330.

Almost surely, 2^{1521540245314} is an apocalyptic number.

1521540245314 is a deficient number, since it is larger than the sum of its proper divisors (760770122660).

1521540245314 is an equidigital number, since it uses as much as digits as its factorization.

1521540245314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760770122659.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 1521540245314 its reverse (4135420451251), we get a palindrome (5656960696565).

The spelling of 1521540245314 in words is "one trillion, five hundred twenty-one billion, five hundred forty million, two hundred forty-five thousand, three hundred fourteen".