2051251061507 has 2 divisors, whose sum is σ = 2051251061508. Its totient is φ = 2051251061506.

The previous prime is 2051251061471. The next prime is 2051251061527. The reversal of 2051251061507 is 7051601521502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2051251061507 - 2¹⁶ = 2051250995971 is a prime.

It is a super-2 number, since 2×2051251061507² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2051251061527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025625530753 + 1025625530754.

It is an arithmetic number, because the mean of its divisors is an integer number (1025625530754).

Almost surely, 2^{2051251061507} is an apocalyptic number.

2051251061507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051251061507 is an equidigital number, since it uses as much as digits as its factorization.

2051251061507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21000, while the sum is 35.

The spelling of 2051251061507 in words is "two trillion, fifty-one billion, two hundred fifty-one million, sixty-one thousand, five hundred seven".