1545064536321 has 12 divisors (see below), whose sum is σ = 2256835840740. Its totient is φ = 1018469506560.

The previous prime is 1545064536313. The next prime is 1545064536341. The reversal of 1545064536321 is 1236354605451.

It is a happy number.

1545064536321 is a `hidden beast` number, since 1 + 5 + 4 + 5 + 0 + 6 + 4 + 5 + 3 + 632 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 309732319296 + 1235332217025 = 556536^2 + 1111455^2 .

It is not a de Polignac number, because 1545064536321 - 2³ = 1545064536313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1545064536341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 964458960 + ... + 964460561.

It is an arithmetic number, because the mean of its divisors is an integer number (188069653395).

Almost surely, 2^{1545064536321} is an apocalyptic number.

It is an amenable number.

1545064536321 is a deficient number, since it is larger than the sum of its proper divisors (711771304419).

1545064536321 is a wasteful number, since it uses less digits than its factorization.

1545064536321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928919616 (or 1928919613 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 45.

The spelling of 1545064536321 in words is "one trillion, five hundred forty-five billion, sixty-four million, five hundred thirty-six thousand, three hundred twenty-one".