6461511501 has 16 divisors (see below), whose sum is σ = 8687044800. Its totient is φ = 4271919360.

The previous prime is 6461511409. The next prime is 6461511523. The reversal of 6461511501 is 1051151646.

6461511501 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6461511501 - 2¹⁰ = 6461510477 is a prime.

It is a super-2 number, since 2×6461511501² = 83502261755110546002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461513501) 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, 276181 + ... + 298661.

It is an arithmetic number, because the mean of its divisors is an integer number (542940300).

Almost surely, 2^6461511501 is an apocalyptic number.

It is an amenable number.

6461511501 is a deficient number, since it is larger than the sum of its proper divisors (2225533299).

6461511501 is a wasteful number, since it uses less digits than its factorization.

6461511501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23276.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 6461511501 is about 80383.5275476263. The cubic root of 6461511501 is about 1862.5647261622.

The spelling of 6461511501 in words is "six billion, four hundred sixty-one million, five hundred eleven thousand, five hundred one".