1075420921651 has 2 divisors, whose sum is σ = 1075420921652. Its totient is φ = 1075420921650.

The previous prime is 1075420921643. The next prime is 1075420921733. The reversal of 1075420921651 is 1561290245701.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1075420921651 - 2³ = 1075420921643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1075420921598 and 1075420921607.

It is not a weakly prime, because it can be changed into another prime (1075420921051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 537710460825 + 537710460826.

It is an arithmetic number, because the mean of its divisors is an integer number (537710460826).

Almost surely, 2^{1075420921651} is an apocalyptic number.

1075420921651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1075420921651 is an equidigital number, since it uses as much as digits as its factorization.

1075420921651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 1075420921651 in words is "one trillion, seventy-five billion, four hundred twenty million, nine hundred twenty-one thousand, six hundred fifty-one".