22723451977 has 2 divisors, whose sum is σ = 22723451978. Its totient is φ = 22723451976.

The previous prime is 22723451963. The next prime is 22723452053. The reversal of 22723451977 is 77915432722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11556035001 + 11167416976 = 107499^2 + 105676^2 .

It is a cyclic number.

It is not a de Polignac number, because 22723451977 - 2¹¹ = 22723449929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22723451977.

It is not a weakly prime, because it can be changed into another prime (22723451917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11361725988 + 11361725989.

It is an arithmetic number, because the mean of its divisors is an integer number (11361725989).

Almost surely, 2^22723451977 is an apocalyptic number.

It is an amenable number.

22723451977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22723451977 is an equidigital number, since it uses as much as digits as its factorization.

22723451977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481760, while the sum is 49.

The spelling of 22723451977 in words is "twenty-two billion, seven hundred twenty-three million, four hundred fifty-one thousand, nine hundred seventy-seven".