6454401641 has 2 divisors, whose sum is σ = 6454401642. Its totient is φ = 6454401640.

The previous prime is 6454401623. The next prime is 6454401647. The reversal of 6454401641 is 1461044546.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4034155225 + 2420246416 = 63515^2 + 49196^2 .

It is a cyclic number.

It is not a de Polignac number, because 6454401641 - 2²⁶ = 6387292777 is a prime.

It is a super-3 number, since 3×6454401641³ (a number of 30 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (6454401647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3227200820 + 3227200821.

It is an arithmetic number, because the mean of its divisors is an integer number (3227200821).

Almost surely, 2^6454401641 is an apocalyptic number.

It is an amenable number.

6454401641 is a deficient number, since it is larger than the sum of its proper divisors (1).

6454401641 is an equidigital number, since it uses as much as digits as its factorization.

6454401641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 6454401641 is about 80339.2907673450. The cubic root of 6454401641 is about 1861.8813239105.

The spelling of 6454401641 in words is "six billion, four hundred fifty-four million, four hundred one thousand, six hundred forty-one".