6543501451 has 4 divisors (see below), whose sum is σ = 6543678400. Its totient is φ = 6543324504.

The previous prime is 6543501397. The next prime is 6543501457. The reversal of 6543501451 is 1541053456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6543501451 - 2⁷ = 6543501323 is a prime.

It is a super-2 number, since 2×6543501451² = 85634822478478210802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6543501457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9516 + ... + 114793.

It is an arithmetic number, because the mean of its divisors is an integer number (1635919600).

Almost surely, 2^6543501451 is an apocalyptic number.

6543501451 is a deficient number, since it is larger than the sum of its proper divisors (176949).

6543501451 is a wasteful number, since it uses less digits than its factorization.

6543501451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176948.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 6543501451 is about 80891.9121482488. The cubic root of 6543501451 is about 1870.4096494516.

The spelling of 6543501451 in words is "six billion, five hundred forty-three million, five hundred one thousand, four hundred fifty-one".