6551465615 has 8 divisors (see below), whose sum is σ = 7863467040. Its totient is φ = 5240033632.

The previous prime is 6551465581. The next prime is 6551465617. The reversal of 6551465615 is 5165641556.

It is a happy number.

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 6551465615 - 2¹⁸ = 6551203471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551465617) 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, 116624 + ... + 163413.

It is an arithmetic number, because the mean of its divisors is an integer number (982933380).

Almost surely, 2^6551465615 is an apocalyptic number.

6551465615 is a deficient number, since it is larger than the sum of its proper divisors (1312001425).

6551465615 is a wasteful number, since it uses less digits than its factorization.

6551465615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284721.

The product of its digits is 540000, while the sum is 44.

The square root of 6551465615 is about 80941.1243744489. The cubic root of 6551465615 is about 1871.1681735094.

The spelling of 6551465615 in words is "six billion, five hundred fifty-one million, four hundred sixty-five thousand, six hundred fifteen".