1520163412543 has 8 divisors (see below), whose sum is σ = 1556098539776. Its totient is φ = 1484254762200.

The previous prime is 1520163412531. The next prime is 1520163412583. The reversal of 1520163412543 is 3452143610251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520163412543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520163412583) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6503013 + ... + 6732718.

It is an arithmetic number, because the mean of its divisors is an integer number (194512317472).

Almost surely, 2^{1520163412543} is an apocalyptic number.

1520163412543 is a deficient number, since it is larger than the sum of its proper divisors (35935127233).

1520163412543 is a wasteful number, since it uses less digits than its factorization.

1520163412543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13238445.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 1520163412543 in words is "one trillion, five hundred twenty billion, one hundred sixty-three million, four hundred twelve thousand, five hundred forty-three".