106561554251 has 2 divisors, whose sum is σ = 106561554252. Its totient is φ = 106561554250.

The previous prime is 106561554241. The next prime is 106561554263. The reversal of 106561554251 is 152455165601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 106561554251 - 2¹⁸ = 106561292107 is a prime.

It is a super-2 number, since 2×106561554251² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106561554199 and 106561554208.

It is not a weakly prime, because it can be changed into another prime (106561554241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53280777125 + 53280777126.

It is an arithmetic number, because the mean of its divisors is an integer number (53280777126).

Almost surely, 2^106561554251 is an apocalyptic number.

106561554251 is a deficient number, since it is larger than the sum of its proper divisors (1).

106561554251 is an equidigital number, since it uses as much as digits as its factorization.

106561554251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180000, while the sum is 41.

The spelling of 106561554251 in words is "one hundred six billion, five hundred sixty-one million, five hundred fifty-four thousand, two hundred fifty-one".