6502127661 has 24 divisors (see below), whose sum is σ = 9775851904. Its totient is φ = 4318712640.

The previous prime is 6502127647. The next prime is 6502127699. The reversal of 6502127661 is 1667212056.

It is a happy number.

It is not a de Polignac number, because 6502127661 - 2²² = 6497933357 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 (6502127461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16485 + ... + 115221.

Almost surely, 2^6502127661 is an apocalyptic number.

It is an amenable number.

6502127661 is a deficient number, since it is larger than the sum of its proper divisors (3273724243).

6502127661 is an equidigital number, since it uses as much as digits as its factorization.

6502127661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99023 (or 99011 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 6502127661 is about 80635.7715967299. The cubic root of 6502127661 is about 1866.4591848720.

The spelling of 6502127661 in words is "six billion, five hundred two million, one hundred twenty-seven thousand, six hundred sixty-one".