1651390013993 has 2 divisors, whose sum is σ = 1651390013994. Its totient is φ = 1651390013992.

The previous prime is 1651390013963. The next prime is 1651390014041. The reversal of 1651390013993 is 3993100931561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1574354901289 + 77035112704 = 1254733^2 + 277552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651390013993 - 2¹⁰ = 1651390012969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1651390013963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825695006996 + 825695006997.

It is an arithmetic number, because the mean of its divisors is an integer number (825695006997).

Almost surely, 2^{1651390013993} is an apocalyptic number.

It is an amenable number.

1651390013993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651390013993 is an equidigital number, since it uses as much as digits as its factorization.

1651390013993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 590490, while the sum is 50.

The spelling of 1651390013993 in words is "one trillion, six hundred fifty-one billion, three hundred ninety million, thirteen thousand, nine hundred ninety-three".