206511232653 has 48 divisors (see below), whose sum is σ = 333456963840. Its totient is φ = 122065958400.

The previous prime is 206511232547. The next prime is 206511232667. The reversal of 206511232653 is 356232115602.

It is not a de Polignac number, because 206511232653 - 2¹² = 206511228557 is a prime.

It is a super-2 number, since 2×206511232653² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206511232153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16550425 + ... + 16562897.

It is an arithmetic number, because the mean of its divisors is an integer number (6947020080).

Almost surely, 2^206511232653 is an apocalyptic number.

It is an amenable number.

206511232653 is a deficient number, since it is larger than the sum of its proper divisors (126945731187).

206511232653 is a wasteful number, since it uses less digits than its factorization.

206511232653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16610 (or 16607 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 206511232653 in words is "two hundred six billion, five hundred eleven million, two hundred thirty-two thousand, six hundred fifty-three".