2051101355551 has 2 divisors, whose sum is σ = 2051101355552. Its totient is φ = 2051101355550.

The previous prime is 2051101355509. The next prime is 2051101355599. The reversal of 2051101355551 is 1555531011502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2051101355551 - 2¹¹ = 2051101353503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2051701355551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025550677775 + 1025550677776.

It is an arithmetic number, because the mean of its divisors is an integer number (1025550677776).

Almost surely, 2^{2051101355551} is an apocalyptic number.

2051101355551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051101355551 is an equidigital number, since it uses as much as digits as its factorization.

2051101355551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 2051101355551 in words is "two trillion, fifty-one billion, one hundred one million, three hundred fifty-five thousand, five hundred fifty-one".