623153423261 has 16 divisors (see below), whose sum is σ = 646102272000. Its totient is φ = 600383750400.

The previous prime is 623153423251. The next prime is 623153423377. The reversal of 623153423261 is 162324351326.

623153423261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623153423261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623153423251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43120565 + ... + 43135013.

It is an arithmetic number, because the mean of its divisors is an integer number (40381392000).

Almost surely, 2^623153423261 is an apocalyptic number.

It is an amenable number.

623153423261 is a deficient number, since it is larger than the sum of its proper divisors (22948848739).

623153423261 is a wasteful number, since it uses less digits than its factorization.

623153423261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20540.

The product of its digits is 155520, while the sum is 38.

Adding to 623153423261 its reverse (162324351326), we get a palindrome (785477774587).

The spelling of 623153423261 in words is "six hundred twenty-three billion, one hundred fifty-three million, four hundred twenty-three thousand, two hundred sixty-one".