6545253487392 has 72 divisors (see below), whose sum is σ = 18613905386076. Its totient is φ = 2181652609536.

The previous prime is 6545253487387. The next prime is 6545253487403. The reversal of 6545253487392 is 2937843525456.

6545253487392 is a `hidden beast` number, since 6 + 5 + 4 + 5 + 2 + 534 + 8 + 7 + 3 + 92 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4981663297296 + 1563590190096 = 2231964^2 + 1250436^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6017478 + ... + 7021434.

Almost surely, 2^{6545253487392} is an apocalyptic number.

It is an amenable number.

6545253487392 is an abundant number, since it is smaller than the sum of its proper divisors (12068651898684).

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

6545253487392 is a wasteful number, since it uses less digits than its factorization.

6545253487392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026610 (or 1026599 counting only the distinct ones).

The product of its digits is 217728000, while the sum is 63.

The spelling of 6545253487392 in words is "six trillion, five hundred forty-five billion, two hundred fifty-three million, four hundred eighty-seven thousand, three hundred ninety-two".