6454401645 has 16 divisors (see below), whose sum is σ = 10934516160. Its totient is φ = 3239856384.

The previous prime is 6454401641. The next prime is 6454401647. The reversal of 6454401645 is 5461044546.

It is not a de Polignac number, because 6454401645 - 2² = 6454401641 is a prime.

It is a super-3 number, since 3×6454401645³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6454401641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12655435 + ... + 12655944.

It is an arithmetic number, because the mean of its divisors is an integer number (683407260).

Almost surely, 2^6454401645 is an apocalyptic number.

It is an amenable number.

6454401645 is a deficient number, since it is larger than the sum of its proper divisors (4480114515).

6454401645 is a wasteful number, since it uses less digits than its factorization.

6454401645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25311404.

The product of its (nonzero) digits is 230400, while the sum is 39.

The square root of 6454401645 is about 80339.2907922394. The cubic root of 6454401645 is about 1861.8813242952.

The spelling of 6454401645 in words is "six billion, four hundred fifty-four million, four hundred one thousand, six hundred forty-five".