6472154721 has 16 divisors (see below), whose sum is σ = 8935004160. Its totient is φ = 4162300800.

The previous prime is 6472154719. The next prime is 6472154729. The reversal of 6472154721 is 1274512746.

It is not a de Polignac number, because 6472154721 - 2¹ = 6472154719 is a prime.

It is a super-3 number, since 3×6472154721³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6472154721.

It is not an unprimeable number, because it can be changed into a prime (6472154729) 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, 67821 + ... + 132453.

It is an arithmetic number, because the mean of its divisors is an integer number (558437760).

Almost surely, 2^6472154721 is an apocalyptic number.

It is an amenable number.

6472154721 is a deficient number, since it is larger than the sum of its proper divisors (2462849439).

6472154721 is a wasteful number, since it uses less digits than its factorization.

6472154721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65816.

The product of its digits is 94080, while the sum is 39.

The square root of 6472154721 is about 80449.7030510368. The cubic root of 6472154721 is about 1863.5868199222.

The spelling of 6472154721 in words is "six billion, four hundred seventy-two million, one hundred fifty-four thousand, seven hundred twenty-one".