652921162961 has 4 divisors (see below), whose sum is σ = 691328290212. Its totient is φ = 614514035712.

The previous prime is 652921162909. The next prime is 652921162963. The reversal of 652921162961 is 169261129256.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 244549041361 + 408372121600 = 494519^2 + 639040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652921162961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652921162963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19203563600 + ... + 19203563633.

It is an arithmetic number, because the mean of its divisors is an integer number (172832072553).

Almost surely, 2^652921162961 is an apocalyptic number.

It is an amenable number.

652921162961 is a deficient number, since it is larger than the sum of its proper divisors (38407127251).

652921162961 is a wasteful number, since it uses less digits than its factorization.

652921162961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38407127250.

The product of its digits is 699840, while the sum is 50.

The spelling of 652921162961 in words is "six hundred fifty-two billion, nine hundred twenty-one million, one hundred sixty-two thousand, nine hundred sixty-one".