23212357770564 has 144 divisors (see below), whose sum is σ = 61911112536000. Its totient is φ = 7312751808768.

The previous prime is 23212357770557. The next prime is 23212357770631. The reversal of 23212357770564 is 46507775321232.

It is a happy number.

23212357770564 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 2 + 3 + 5 + 7 + 7 + 70 + 564 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23212357770564.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2120038162 + ... + 2120049110.

It is an arithmetic number, because the mean of its divisors is an integer number (429938281500).

Almost surely, 2^{23212357770564} 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 23212357770564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30955556268000).

23212357770564 is an abundant number, since it is smaller than the sum of its proper divisors (38698754765436).

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

23212357770564 is a wasteful number, since it uses less digits than its factorization.

23212357770564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18082 (or 18077 counting only the distinct ones).

The product of its (nonzero) digits is 14817600, while the sum is 54.

The spelling of 23212357770564 in words is "twenty-three trillion, two hundred twelve billion, three hundred fifty-seven million, seven hundred seventy thousand, five hundred sixty-four".