1545342521646 has 64 divisors (see below), whose sum is σ = 3856499698176. Its totient is φ = 401056617600.

The previous prime is 1545342521629. The next prime is 1545342521711. The reversal of 1545342521646 is 6461252435451.

It is a junction number, because it is equal to n+sod(n) for n = 1545342521595 and 1545342521604.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 818365 + ... + 1939176.

It is an arithmetic number, because the mean of its divisors is an integer number (60257807784).

Almost surely, 2^{1545342521646} is an apocalyptic number.

1545342521646 is an abundant number, since it is smaller than the sum of its proper divisors (2311157176530).

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

1545342521646 is a wasteful number, since it uses less digits than its factorization.

1545342521646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758777.

The product of its digits is 3456000, while the sum is 48.

The spelling of 1545342521646 in words is "one trillion, five hundred forty-five billion, three hundred forty-two million, five hundred twenty-one thousand, six hundred forty-six".