521611035093 has 12 divisors (see below), whose sum is σ = 779418788460. Its totient is φ = 335749631616.

The previous prime is 521611035089. The next prime is 521611035103. The reversal of 521611035093 is 390530116125.

It is a happy number.

521611035093 is a `hidden beast` number, since 5 + 2 + 1 + 611 + 0 + 35 + 0 + 9 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 180266478084 + 341344557009 = 424578^2 + 584247^2 .

It is not a de Polignac number, because 521611035093 - 2² = 521611035089 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521611035073) 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, 999254596 + ... + 999255117.

It is an arithmetic number, because the mean of its divisors is an integer number (64951565705).

Almost surely, 2^521611035093 is an apocalyptic number.

It is an amenable number.

521611035093 is a deficient number, since it is larger than the sum of its proper divisors (257807753367).

521611035093 is a wasteful number, since it uses less digits than its factorization.

521611035093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998509748 (or 1998509745 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The spelling of 521611035093 in words is "five hundred twenty-one billion, six hundred eleven million, thirty-five thousand, ninety-three".