1521051123993 has 16 divisors (see below), whose sum is σ = 2147563419840. Its totient is φ = 954297406976.

The previous prime is 1521051123923. The next prime is 1521051124007. The reversal of 1521051123993 is 3993211501251.

It is a cyclic number.

It is not a de Polignac number, because 1521051123993 - 2¹⁸ = 1521050861849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1521051123923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805683 + ... + 1921256.

It is an arithmetic number, because the mean of its divisors is an integer number (134222713740).

Almost surely, 2^{1521051123993} is an apocalyptic number.

It is an amenable number.

1521051123993 is a deficient number, since it is larger than the sum of its proper divisors (626512295847).

1521051123993 is a wasteful number, since it uses less digits than its factorization.

1521051123993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737896.

The product of its (nonzero) digits is 72900, while the sum is 42.

The spelling of 1521051123993 in words is "one trillion, five hundred twenty-one billion, fifty-one million, one hundred twenty-three thousand, nine hundred ninety-three".