1650862110721 has 2 divisors, whose sum is σ = 1650862110722. Its totient is φ = 1650862110720.

The previous prime is 1650862110637. The next prime is 1650862110763. The reversal of 1650862110721 is 1270112680561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 885272110321 + 765590000400 = 940889^2 + 874980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650862110721 - 2¹³ = 1650862102529 is a prime.

It is a super-2 number, since 2×1650862110721² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1650862113721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825431055360 + 825431055361.

It is an arithmetic number, because the mean of its divisors is an integer number (825431055361).

Almost surely, 2^{1650862110721} is an apocalyptic number.

It is an amenable number.

1650862110721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650862110721 is an equidigital number, since it uses as much as digits as its factorization.

1650862110721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 40.

The spelling of 1650862110721 in words is "one trillion, six hundred fifty billion, eight hundred sixty-two million, one hundred ten thousand, seven hundred twenty-one".