612641211046521 has 8 divisors (see below), whose sum is σ = 852370380586560. Its totient is φ = 390669757768752.

The previous prime is 612641211046519. The next prime is 612641211046531. The reversal of 612641211046521 is 125640112146216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 612641211046521 - 2¹ = 612641211046519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612641211046531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4439429065486 + ... + 4439429065623.

It is an arithmetic number, because the mean of its divisors is an integer number (106546297573320).

Almost surely, 2^{612641211046521} is an apocalyptic number.

It is an amenable number.

612641211046521 is a deficient number, since it is larger than the sum of its proper divisors (239729169540039).

612641211046521 is a wasteful number, since it uses less digits than its factorization.

612641211046521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8878858131135.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 612641211046521 in words is "six hundred twelve trillion, six hundred forty-one billion, two hundred eleven million, forty-six thousand, five hundred twenty-one".