1521634245243 has 96 divisors (see below), whose sum is σ = 2582423285760. Its totient is φ = 791069368320.

The previous prime is 1521634245191. The next prime is 1521634245289. The reversal of 1521634245243 is 3425424361251.

It is not a de Polignac number, because 1521634245243 - 2⁹ = 1521634244731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1521634245195 and 1521634245204.

It is not an unprimeable number, because it can be changed into a prime (1521634246243) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 71958130 + ... + 71979272.

It is an arithmetic number, because the mean of its divisors is an integer number (26900242560).

Almost surely, 2^{1521634245243} is an apocalyptic number.

1521634245243 is a deficient number, since it is larger than the sum of its proper divisors (1060789040517).

1521634245243 is a wasteful number, since it uses less digits than its factorization.

1521634245243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22137 (or 22130 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The spelling of 1521634245243 in words is "one trillion, five hundred twenty-one billion, six hundred thirty-four million, two hundred forty-five thousand, two hundred forty-three".