22646520544428 has 336 divisors, whose sum is σ = 69220195752960. Its totient is φ = 6412193020800.

The previous prime is 22646520544393. The next prime is 22646520544429. The reversal of 22646520544428 is 82444502564622.

22646520544428 is a `hidden beast` number, since 2 + 2 + 6 + 4 + 6 + 5 + 205 + 4 + 4 + 428 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (22646520544429) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 28443651 + ... + 29228997.

It is an arithmetic number, because the mean of its divisors is an integer number (206012487360).

Almost surely, 2^{22646520544428} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22646520544428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34610097876480).

22646520544428 is an abundant number, since it is smaller than the sum of its proper divisors (46573675208532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22646520544428 is a wasteful number, since it uses less digits than its factorization.

22646520544428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785440 (or 785423 counting only the distinct ones).

The product of its (nonzero) digits is 29491200, while the sum is 54.

The spelling of 22646520544428 in words is "twenty-two trillion, six hundred forty-six billion, five hundred twenty million, five hundred forty-four thousand, four hundred twenty-eight".