2051051205629 has 4 divisors (see below), whose sum is σ = 2051914081884. Its totient is φ = 2050188329376.

The previous prime is 2051051205557. The next prime is 2051051205641. The reversal of 2051051205629 is 9265021501502.

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

It can be written as a sum of positive squares in 2 ways, for example, as 764528143129 + 1286523062500 = 874373^2 + 1134250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2051051205629 - 2²⁸ = 2050782770173 is a prime.

It is a super-2 number, since 2×2051051205629² (a number of 25 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 = 2051051205592 and 2051051205601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051051205659) 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, 431434562 + ... + 431439315.

It is an arithmetic number, because the mean of its divisors is an integer number (512978520471).

Almost surely, 2^{2051051205629} is an apocalyptic number.

It is an amenable number.

2051051205629 is a deficient number, since it is larger than the sum of its proper divisors (862876255).

2051051205629 is an equidigital number, since it uses as much as digits as its factorization.

2051051205629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862876254.

The product of its (nonzero) digits is 54000, while the sum is 38.

The spelling of 2051051205629 in words is "two trillion, fifty-one billion, fifty-one million, two hundred five thousand, six hundred twenty-nine".