2120023326457 has 2 divisors, whose sum is σ = 2120023326458. Its totient is φ = 2120023326456.

The previous prime is 2120023326439. The next prime is 2120023326461. The reversal of 2120023326457 is 7546233200212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1817505726201 + 302517600256 = 1348149^2 + 550016^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120023326457 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120023326557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060011663228 + 1060011663229.

It is an arithmetic number, because the mean of its divisors is an integer number (1060011663229).

Almost surely, 2^{2120023326457} is an apocalyptic number.

It is an amenable number.

2120023326457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120023326457 is an equidigital number, since it uses as much as digits as its factorization.

2120023326457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

Adding to 2120023326457 its reverse (7546233200212), we get a palindrome (9666256526669).

The spelling of 2120023326457 in words is "two trillion, one hundred twenty billion, twenty-three million, three hundred twenty-six thousand, four hundred fifty-seven".