6642256151 has 4 divisors (see below), whose sum is σ = 6991848600. Its totient is φ = 6292663704.

The previous prime is 6642256147. The next prime is 6642256177. The reversal of 6642256151 is 1516522466.

6642256151 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, and also an emirpimes, since its reverse is a distinct semiprime: 1516522466 = 2 ⋅758261233.

It is a cyclic number.

It is not a de Polignac number, because 6642256151 - 2² = 6642256147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642216151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174796196 + ... + 174796233.

It is an arithmetic number, because the mean of its divisors is an integer number (1747962150).

Almost surely, 2^6642256151 is an apocalyptic number.

6642256151 is a deficient number, since it is larger than the sum of its proper divisors (349592449).

6642256151 is a wasteful number, since it uses less digits than its factorization.

6642256151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349592448.

The product of its digits is 86400, while the sum is 38.

The square root of 6642256151 is about 81500.0377361876. The cubic root of 6642256151 is about 1879.7721308811.

The spelling of 6642256151 in words is "six billion, six hundred forty-two million, two hundred fifty-six thousand, one hundred fifty-one".