2654704623421 has 2 divisors, whose sum is σ = 2654704623422. Its totient is φ = 2654704623420.

The previous prime is 2654704623419. The next prime is 2654704623437. The reversal of 2654704623421 is 1243264074562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2250735060025 + 403969563396 = 1500245^2 + 635586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2654704623421 - 2¹ = 2654704623419 is a prime.

It is a super-2 number, since 2×2654704623421² (a number of 26 digits) contains 22 as substring.

Together with 2654704623419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2654704623401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327352311710 + 1327352311711.

It is an arithmetic number, because the mean of its divisors is an integer number (1327352311711).

Almost surely, 2^{2654704623421} is an apocalyptic number.

It is an amenable number.

2654704623421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2654704623421 is an equidigital number, since it uses as much as digits as its factorization.

2654704623421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 46.

Adding to 2654704623421 its reverse (1243264074562), we get a palindrome (3897968697983).

The spelling of 2654704623421 in words is "two trillion, six hundred fifty-four billion, seven hundred four million, six hundred twenty-three thousand, four hundred twenty-one".