623012546661 has 4 divisors (see below), whose sum is σ = 830683395552. Its totient is φ = 415341697772.

The previous prime is 623012546641. The next prime is 623012546693. The reversal of 623012546661 is 166645210326.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623012546661 - 2¹⁴ = 623012530277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623012546641) 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, 103835424441 + ... + 103835424446.

It is an arithmetic number, because the mean of its divisors is an integer number (207670848888).

Almost surely, 2^623012546661 is an apocalyptic number.

It is an amenable number.

623012546661 is a deficient number, since it is larger than the sum of its proper divisors (207670848891).

623012546661 is a wasteful number, since it uses less digits than its factorization.

623012546661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207670848890.

The product of its (nonzero) digits is 311040, while the sum is 42.

Adding to 623012546661 its reverse (166645210326), we get a palindrome (789657756987).

The spelling of 623012546661 in words is "six hundred twenty-three billion, twelve million, five hundred forty-six thousand, six hundred sixty-one".