2440064703821 has 2 divisors, whose sum is σ = 2440064703822. Its totient is φ = 2440064703820.

The previous prime is 2440064703793. The next prime is 2440064703833. The reversal of 2440064703821 is 1283074600442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1922629054921 + 517435648900 = 1386589^2 + 719330^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440064703821 - 2¹⁸ = 2440064441677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2440064705821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220032351910 + 1220032351911.

It is an arithmetic number, because the mean of its divisors is an integer number (1220032351911).

Almost surely, 2^{2440064703821} is an apocalyptic number.

It is an amenable number.

2440064703821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440064703821 is an equidigital number, since it uses as much as digits as its factorization.

2440064703821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 2440064703821 in words is "two trillion, four hundred forty billion, sixty-four million, seven hundred three thousand, eight hundred twenty-one".