22780720897 has 8 divisors (see below), whose sum is σ = 24917271840. Its totient is φ = 20655099360.

The previous prime is 22780720889. The next prime is 22780720927. The reversal of 22780720897 is 79802708722.

It is a happy number.

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 22780720897 - 2³ = 22780720889 is a prime.

It is a super-2 number, since 2×22780720897² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22780720847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2727988 + ... + 2736325.

It is an arithmetic number, because the mean of its divisors is an integer number (3114658980).

Almost surely, 2^22780720897 is an apocalyptic number.

It is an amenable number.

22780720897 is a deficient number, since it is larger than the sum of its proper divisors (2136550943).

22780720897 is a wasteful number, since it uses less digits than its factorization.

22780720897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5464703.

The product of its (nonzero) digits is 1580544, while the sum is 52.

The spelling of 22780720897 in words is "twenty-two billion, seven hundred eighty million, seven hundred twenty thousand, eight hundred ninety-seven".