6601364871653 has 4 divisors (see below), whose sum is σ = 6605254893900. Its totient is φ = 6597474849408.

The previous prime is 6601364871631. The next prime is 6601364871671. The reversal of 6601364871653 is 3561784631066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4868121529924 + 1733243341729 = 2206382^2 + 1316527^2 .

It is a cyclic number.

It is not a de Polignac number, because 6601364871653 - 2²⁰ = 6601363823077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601364871683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945008578 + ... + 1945011971.

It is an arithmetic number, because the mean of its divisors is an integer number (1651313723475).

Almost surely, 2^{6601364871653} is an apocalyptic number.

It is an amenable number.

6601364871653 is a deficient number, since it is larger than the sum of its proper divisors (3890022247).

6601364871653 is a wasteful number, since it uses less digits than its factorization.

6601364871653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890022246.

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 6601364871653 in words is "six trillion, six hundred one billion, three hundred sixty-four million, eight hundred seventy-one thousand, six hundred fifty-three".