6721451151 has 4 divisors (see below), whose sum is σ = 8961934872. Its totient is φ = 4480967432.

The previous prime is 6721451063. The next prime is 6721451171. The reversal of 6721451151 is 1511541276.

6721451151 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6721451151 - 2¹⁴ = 6721434767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721451171) 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, 1120241856 + ... + 1120241861.

It is an arithmetic number, because the mean of its divisors is an integer number (2240483718).

Almost surely, 2^6721451151 is an apocalyptic number.

6721451151 is a deficient number, since it is larger than the sum of its proper divisors (2240483721).

6721451151 is a wasteful number, since it uses less digits than its factorization.

6721451151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240483720.

The product of its digits is 8400, while the sum is 33.

The square root of 6721451151 is about 81984.4567646819. The cubic root of 6721451151 is about 1887.2134173965.

The spelling of 6721451151 in words is "six billion, seven hundred twenty-one million, four hundred fifty-one thousand, one hundred fifty-one".