1052861721407 has 2 divisors, whose sum is σ = 1052861721408. Its totient is φ = 1052861721406.

The previous prime is 1052861721397. The next prime is 1052861721451. The reversal of 1052861721407 is 7041271682501.

It is an a-pointer prime, because the next prime (1052861721451) can be obtained adding 1052861721407 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1052861721407 - 2¹⁶ = 1052861655871 is a prime.

It is a super-2 number, since 2×1052861721407² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1052861721467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526430860703 + 526430860704.

It is an arithmetic number, because the mean of its divisors is an integer number (526430860704).

Almost surely, 2^{1052861721407} is an apocalyptic number.

1052861721407 is a deficient number, since it is larger than the sum of its proper divisors (1).

1052861721407 is an equidigital number, since it uses as much as digits as its factorization.

1052861721407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 44.

The spelling of 1052861721407 in words is "one trillion, fifty-two billion, eight hundred sixty-one million, seven hundred twenty-one thousand, four hundred seven".