206158429951 has 2 divisors, whose sum is σ = 206158429952. Its totient is φ = 206158429950.

The previous prime is 206158429937. The next prime is 206158429979. The reversal of 206158429951 is 159924851602.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206158429951 - 2¹⁹ = 206157905663 is a prime.

It is a super-2 number, since 2×206158429951² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206158429051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103079214975 + 103079214976.

It is an arithmetic number, because the mean of its divisors is an integer number (103079214976).

Almost surely, 2^206158429951 is an apocalyptic number.

206158429951 is a deficient number, since it is larger than the sum of its proper divisors (1).

206158429951 is an equidigital number, since it uses as much as digits as its factorization.

206158429951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 206158429951 in words is "two hundred six billion, one hundred fifty-eight million, four hundred twenty-nine thousand, nine hundred fifty-one".