652177050721 has 12 divisors (see below), whose sum is σ = 771091906260. Its totient is φ = 549844817760.

The previous prime is 652177050719. The next prime is 652177050737. The reversal of 652177050721 is 127050771256.

It can be written as a sum of positive squares in 2 ways, for example, as 27071766225 + 625105284496 = 164535^2 + 790636^2 .

It is not a de Polignac number, because 652177050721 - 2¹ = 652177050719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652177053721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109093206 + ... + 109099183.

It is an arithmetic number, because the mean of its divisors is an integer number (64257658855).

Almost surely, 2^652177050721 is an apocalyptic number.

652177050721 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

652177050721 is a deficient number, since it is larger than the sum of its proper divisors (118914855539).

652177050721 is a wasteful number, since it uses less digits than its factorization.

652177050721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218192464 (or 218192457 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 43.

The spelling of 652177050721 in words is "six hundred fifty-two billion, one hundred seventy-seven million, fifty thousand, seven hundred twenty-one".