206625164351 has 4 divisors (see below), whose sum is σ = 207387619104. Its totient is φ = 205862709600.

The previous prime is 206625164321. The next prime is 206625164363. The reversal of 206625164351 is 153461526602.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206625164351 is a prime.

It is a super-2 number, since 2×206625164351² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206625164299 and 206625164308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206625164321) 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, 381226970 + ... + 381227511.

It is an arithmetic number, because the mean of its divisors is an integer number (51846904776).

Almost surely, 2^206625164351 is an apocalyptic number.

206625164351 is a deficient number, since it is larger than the sum of its proper divisors (762454753).

206625164351 is an equidigital number, since it uses as much as digits as its factorization.

206625164351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762454752.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 206625164351 in words is "two hundred six billion, six hundred twenty-five million, one hundred sixty-four thousand, three hundred fifty-one".