623849122961 has 8 divisors (see below), whose sum is σ = 660564261864. Its totient is φ = 587135998720.

The previous prime is 623849122933. The next prime is 623849122969. The reversal of 623849122961 is 169221948326.

It can be written as a sum of positive squares in 4 ways, for example, as 94891105936 + 528958017025 = 308044^2 + 727295^2 .

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 623849122961 - 2¹⁰ = 623849121937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623849122969) 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, 158771 + ... + 1128231.

It is an arithmetic number, because the mean of its divisors is an integer number (82570532733).

Almost surely, 2^623849122961 is an apocalyptic number.

It is an amenable number.

623849122961 is a deficient number, since it is larger than the sum of its proper divisors (36715138903).

623849122961 is a wasteful number, since it uses less digits than its factorization.

623849122961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007331.

The product of its digits is 2239488, while the sum is 53.

The spelling of 623849122961 in words is "six hundred twenty-three billion, eight hundred forty-nine million, one hundred twenty-two thousand, nine hundred sixty-one".