22399678516 has 24 divisors (see below), whose sum is σ = 41523047496. Its totient is φ = 10536514560.

The previous prime is 22399678513. The next prime is 22399678517. The reversal of 22399678516 is 61587699322.

It can be written as a sum of positive squares in 4 ways, for example, as 10858473616 + 11541204900 = 104204^2 + 107430^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22399678513) 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, 92346 + ... + 230926.

It is an arithmetic number, because the mean of its divisors is an integer number (1730126979).

Almost surely, 2^22399678516 is an apocalyptic number.

It is an amenable number.

22399678516 is a deficient number, since it is larger than the sum of its proper divisors (19123368980).

22399678516 is a wasteful number, since it uses less digits than its factorization.

22399678516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140979 (or 140977 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 58.

The spelling of 22399678516 in words is "twenty-two billion, three hundred ninety-nine million, six hundred seventy-eight thousand, five hundred sixteen".