22720475501 has 8 divisors (see below), whose sum is σ = 23215512600. Its totient is φ = 22227895872.

The previous prime is 22720475483. The next prime is 22720475507. The reversal of 22720475501 is 10557402722.

It can be written as a sum of positive squares in 4 ways, for example, as 10137469225 + 12583006276 = 100685^2 + 112174^2 .

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 22720475501 - 2¹⁴ = 22720459117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22720475507) 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, 595670 + ... + 632663.

It is an arithmetic number, because the mean of its divisors is an integer number (2901939075).

Almost surely, 2^22720475501 is an apocalyptic number.

It is an amenable number.

22720475501 is a deficient number, since it is larger than the sum of its proper divisors (495037099).

22720475501 is a wasteful number, since it uses less digits than its factorization.

22720475501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228735.

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 22720475501 in words is "twenty-two billion, seven hundred twenty million, four hundred seventy-five thousand, five hundred one".