2150436066421 has 2 divisors, whose sum is σ = 2150436066422. Its totient is φ = 2150436066420.

The previous prime is 2150436066407. The next prime is 2150436066473. The reversal of 2150436066421 is 1246606340512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1582991748900 + 567444317521 = 1258170^2 + 753289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150436066421 - 2⁷ = 2150436066293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2150436066481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075218033210 + 1075218033211.

It is an arithmetic number, because the mean of its divisors is an integer number (1075218033211).

Almost surely, 2^{2150436066421} is an apocalyptic number.

It is an amenable number.

2150436066421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150436066421 is an equidigital number, since it uses as much as digits as its factorization.

2150436066421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 2150436066421 in words is "two trillion, one hundred fifty billion, four hundred thirty-six million, sixty-six thousand, four hundred twenty-one".