22729954723505 has 16 divisors (see below), whose sum is σ = 27378109146960. Its totient is φ = 18115938527232.

The previous prime is 22729954723457. The next prime is 22729954723507. The reversal of 22729954723505 is 50532745992722.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1927443528976 + 20802511194529 = 1388324^2 + 4560977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22729954723505 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22729954723507) 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, 3060614 + ... + 7404543.

It is an arithmetic number, because the mean of its divisors is an integer number (1711131821685).

Almost surely, 2^{22729954723505} is an apocalyptic number.

It is an amenable number.

22729954723505 is a deficient number, since it is larger than the sum of its proper divisors (4648154423455).

22729954723505 is a wasteful number, since it uses less digits than its factorization.

22729954723505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10466788.

The product of its (nonzero) digits is 95256000, while the sum is 62.

The spelling of 22729954723505 in words is "twenty-two trillion, seven hundred twenty-nine billion, nine hundred fifty-four million, seven hundred twenty-three thousand, five hundred five".