6521151667 has 8 divisors (see below), whose sum is σ = 6551464176. Its totient is φ = 6490877952.

The previous prime is 6521151653. The next prime is 6521151673. The reversal of 6521151667 is 7661511256.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6521151667 - 2¹⁵ = 6521118899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6521151467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359428 + ... + 377134.

It is an arithmetic number, because the mean of its divisors is an integer number (818933022).

Almost surely, 2^6521151667 is an apocalyptic number.

6521151667 is a deficient number, since it is larger than the sum of its proper divisors (30312509).

6521151667 is a wasteful number, since it uses less digits than its factorization.

6521151667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19397.

The product of its digits is 75600, while the sum is 40.

The square root of 6521151667 is about 80753.6480104769. The cubic root of 6521151667 is about 1868.2777156311.

The spelling of 6521151667 in words is "six billion, five hundred twenty-one million, one hundred fifty-one thousand, six hundred sixty-seven".